{"item": {"cve_id": "CVE-2026-64849", "ghsa_id": "", "osv_id": "", "title": "MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypassed via unvalidated HTTP redirects (and DNS rebinding)", "description": "MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Starting in 3.3.0 and prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/{id}/test endpoint calls _validate_webhook_url() in mlflow/utils/validation.py only for the original URL while mlflow/webhooks/delivery.py follows redirects and re-resolves the hostname without pinning the validated address, allowing attackers to reach internal or cloud metadata services and receive response_status and response_body. This issue is fixed in version 3.15.0.", "published_at": "2026-08-17T22:17:23.580", "modified_at": "2026-10-05T13:35:35.850", "vendor": "Lfprojects", "product": "Mlflow", "affected_versions": [">= 3.3.0, < 3.15.0"], "fixed_versions": [], "cvss_score": 9.3, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "severity": "CRITICAL", "epss_score": 0.09839, "epss_percentile": 0.95506, "epss_date": "2026-10-15", "is_kev": true, "kev_date": "2026-08-19", "kev_due_date": "2026-09-02", "kev_action": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.", "cwe_ids": ["CWE-918"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "NONE", "user_interaction": "NONE", "references": ["https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939", "https://github.com/mlflow/mlflow/issues/24179", "https://github.com/mlflow/mlflow/pull/24258", "https://github.com/mlflow/mlflow/releases/tag/v3.15.0", "https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2026-64849", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2026-64849", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2026-64849"}, "patch_available": null, "workaround_available": null, "sources": ["NVD", "CVE.org", "CISA", "FIRST EPSS"], "reference_items": [{"url": "https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939", "tags": ["Patch", "x_refsource_MISC"], "source": "NVD", "name": ""}, {"url": "https://github.com/mlflow/mlflow/issues/24179", "tags": ["Exploit", "Issue Tracking", "Mitigation", "x_refsource_MISC"], "source": "NVD", "name": ""}, {"url": "https://github.com/mlflow/mlflow/pull/24258", "tags": ["Issue Tracking", "Patch", "x_refsource_MISC"], "source": "NVD", "name": ""}, {"url": "https://github.com/mlflow/mlflow/releases/tag/v3.15.0", "tags": ["Release Notes", "x_refsource_MISC"], "source": "NVD", "name": ""}, {"url": "https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j", "tags": ["Exploit", "Vendor Advisory", "x_refsource_CONFIRM"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849", "tags": ["US Government Resource", "government-resource"], "source": "NVD", "name": ""}], "cvss_v4_score": null, "cvss_v4_vector": "", "cvss_v4_severity": "", "nvd_status": "Analyzed", "cna": "GitHub_M", "date_reserved": "2026-07-20T18:31:39.290Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "yes", "Technical Impact": "partial"}, "version": "2.0.3", "timestamp": "2026-08-20T03:55:29.820245Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Lfprojects", "product": "Mlflow", "ranges": ["de 3.3.0 à 3.15.0 (exclue)"], "first_unaffected": ["3.15.0"], "source": "NVD"}, {"vendor": "mlflow", "product": "mlflow", "ranges": [">= 3.3.0, < 3.15.0"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "MLflow Server-Side Request Forgery Vulnerability", "kev_short_description": "MLflow contains a server-side request forgery vulnerability that can allow attackers to reach internal or cloud metadata services and receive response_status and response_body.", "kev_ransomware": "Unknown", "kev_notes": "https://github.com/mlflow/mlflow/pull/24258 ; https://github.com/mlflow/mlflow/issues/24179 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-64849", "kev_cwes": ["CWE-918"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 76, "risk_class": "Critique", "impact": {"confidentialite": "élevé", "integrite": "limité", "disponibilite": "aucun", "summary": "Un attaquant exploitant cette vulnérabilité pourrait, selon les conditions décrites par les sources, exploitable à distance (réseau), sans authentification préalable, affecter la confidentialité des données et l'intégrité du système.", "basis": "CVSS 3.1"}, "mechanism": "Falsification de requête côté serveur (SSRF) : le serveur peut être amené à contacter des ressources internes.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Mlflow 3.15.0."}, "mitigation": {"specific": "Aucune mesure de mitigation spécifique confirmée par les sources consultées. Consultez les références officielles pour d'éventuelles mesures détaillées.", "general": ["Maintenir le produit à jour et activer les mises à jour de sécurité.", "Restreindre l'exposition réseau du service au strict nécessaire.", "Appliquer le principe du moindre privilège.", "Surveiller les journaux et les alertes de sécurité."], "specific_links": []}, "containment": {"applicable": true, "actions": ["Action recommandée par la CISA : Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.", "Isoler ou restreindre l'accès au service concerné.", "Restreindre les flux réseau entrants/sortants liés au composant.", "Renforcer la surveillance des journaux et des accès.", "Désactiver temporairement le composant vulnérable si l'activité le permet."]}, "note": "Priorité aux consignes officielles de l'éditeur et des références. Vérifiez toujours l'avis de sécurité avant toute intervention en production.", "official_links": [{"url": "https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "GitHub", "domaine": "github.com"}, {"url": "https://github.com/mlflow/mlflow/pull/24258", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "GitHub", "domaine": "github.com"}, {"url": "https://github.com/mlflow/mlflow/releases/tag/v3.15.0", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "GitHub", "domaine": "github.com"}]}, "plain": {"verdict": "now", "verdict_label": "Exploité par des attaquants · à traiter aujourd'hui", "verdict_css": "now", "verdict_rank": 0, "headline": "Le serveur peut être poussé à contacter des machines internes, à distance et sans compte", "headline_is_derived": true, "action": "Mettre à jour vers Mlflow 3.15.0 ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Mlflow 3.15.0 ou plus récent", "state": "safe", "state_label": "Non concerné", "todo": "Rien à faire. Gardez les mises à jour automatiques activées."}, {"version": ">= 3.3.0, < 3.15.0", "state": "hit", "state_label": "Concerné", "todo": "Mettre à jour vers Mlflow 3.15.0 ou plus récent, version publiée comme non concernée."}, {"version": "Je ne connais pas ma version", "state": "unknown", "state_label": "À vérifier", "todo": "La version s'affiche généralement dans le menu « À propos » ou « Aide » du logiciel."}], "steps": [{"title": "Sauvegarder avant d'intervenir", "detail": "Une copie récente des données et de la configuration. Si votre hébergeur propose une sauvegarde en un clic, c'est le moment.", "duration": "10 min", "priority": false}, {"title": "Mettre à jour vers Mlflow 3.15.0 ou plus récent, version publiée comme non concernée", "detail": "C'est la correction officielle. Tant qu'elle n'est pas appliquée, les autres mesures ne sont que temporaires.", "duration": "15 à 45 min", "priority": true}, {"title": "En attendant : réduire l'exposition sur Internet", "detail": "La faille est exploitable à distance. Limiter l'accès au service depuis l'extérieur (pare-feu, filtrage d'adresses, VPN) réduit fortement le risque.", "duration": "30 min", "priority": false}, {"title": "Vérifier que vous n'avez pas déjà été touché", "detail": "Cette faille est activement exploitée. Contrôler les comptes créés récemment, les connexions inhabituelles et les fichiers modifiés depuis la date de publication.", "duration": "30 min", "priority": true}, {"title": "Confirmer que tout fonctionne encore", "detail": "Après correction : page d'accueil, connexion, et les deux ou trois fonctions dont vous vous servez tous les jours.", "duration": "10 min", "priority": false}], "exploited": true, "exploited_label": "Oui, des attaques réelles sont constatées", "fixed_label": "Mlflow 3.15.0 (non concernée selon les sources)", "affected_label": ">= 3.3.0, < 3.15.0"}, "severity_display": "Critique", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2026-64849", "severity_fr": "Critique", "epss_pct": 9.8, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2026-08-17", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64849"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2026-08-17", "url": "https://www.cve.org/CVERecord?id=CVE-2026-64849"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2026-08-19", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849"}, {"source": "FIRST EPSS", "label": "FIRST EPSS", "date_label": "Score daté du", "date": "2026-10-15", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-64849"}], "exploit_public": true, "reseau_sans_auth": true, "exposition": "À distance, sans compte et sans action d'un utilisateur", "owasp": [{"code": "A01", "nom": "Contrôle d'accès défaillant", "nom_officiel": "Broken Access Control", "slug": "a01-controle-d-acces-defaillant", "libelle": "A01:2025 Contrôle d'accès défaillant", "url_officielle": "https://top10.owasp.org/2025/A01_2025-Broken_Access_Control/"}]}, "presentation": {"en_bref": [{"question": "Est-elle attaquée ?", "ton": "alerte", "reponse": "Oui, attaques constatées", "source": "Catalogue CISA KEV"}, {"question": "Existe-t-il un correctif ?", "ton": "bon", "reponse": "Oui : 3.15.0", "source": "Versions publiées comme non concernées"}, {"question": "Comment l'attaquer ?", "ton": "alerte", "reponse": "À distance, sans compte et sans action d'un utilisateur", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "vigilance", "reponse": "9,8 % sur 30 jours", "source": "Plus probable que 96 % des failles connues"}], "references": [{"cle": "correctif", "titre": "Correctifs et versions corrigées", "explication": "Les pages que les sources désignent comme correctif ou notes de version.", "items": [{"url": "https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Correctif"], "nom": "", "lien": true, "casse": false}, {"url": "https://github.com/mlflow/mlflow/pull/24258", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Suivi de ticket", "Correctif"], "nom": "", "lien": true, "casse": false}, {"url": "https://github.com/mlflow/mlflow/releases/tag/v3.15.0", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Notes de version"], "nom": "", "lien": true, "casse": false}]}, {"cle": "avis_tiers", "titre": "Avis d'autorités et d'organismes tiers", "explication": "CERT, agences gouvernementales, bases de vulnérabilités, chercheurs.", "items": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale américaine", "Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}, {"cle": "exploit", "titre": "Codes d'exploitation référencés", "explication": "Les sources signalent un code d'exploitation public. Par prudence, CyberAlert affiche le site qui l'héberge sans lien direct : l'information utile ici est son existence, qui rend la faille plus facile à attaquer.", "items": [{"url": "https://github.com/mlflow/mlflow/issues/24179", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Code d'exploitation", "Suivi de ticket", "Mesure de contournement"], "nom": "", "lien": false, "casse": false}, {"url": "https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j", "domaine": "github.com", "editeur": "GitHub Security Advisory", "etiquettes": ["Code d'exploitation", "Avis de l'éditeur"], "nom": "", "lien": false, "casse": false}]}], "liens_correction": [{"url": "https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Correctif"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "https://github.com/mlflow/mlflow/pull/24258", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Suivi de ticket", "Correctif"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "https://github.com/mlflow/mlflow/releases/tag/v3.15.0", "domaine": "github.com", "editeur": "GitHub", "etiquettes": ["Notes de version"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}], "nb_exploits": 2, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "metriques": [{"code": "AV", "nom": "Vecteur d'attaque", "valeur": "Réseau (à distance, y compris par Internet)", "brut": "N", "explication": "D'où l'attaquant doit agir."}, {"code": "AC", "nom": "Complexité de l'attaque", "valeur": "Faible", "brut": "L", "explication": "Conditions hors du contrôle de l'attaquant."}, {"code": "PR", "nom": "Privilèges requis", "valeur": "Aucun (pas de compte)", "brut": "N", "explication": "Droits dont l'attaquant a besoin avant d'attaquer."}, {"code": "UI", "nom": "Interaction de l'utilisateur", "valeur": "Aucune", "brut": "N", "explication": "Une victime doit-elle cliquer ou ouvrir quelque chose ?"}, {"code": "S", "nom": "Portée", "valeur": "Modifiée (d'autres composants peuvent être touchés)", "brut": "C", "explication": "L'attaque peut-elle toucher d'autres composants que celui qui est vulnérable ?"}, {"code": "C", "nom": "Confidentialité", "valeur": "Élevé", "brut": "H", "explication": "Accès à des informations protégées."}, {"code": "I", "nom": "Intégrité", "valeur": "Faible", "brut": "L", "explication": "Modification de données ou du système."}, {"code": "A", "nom": "Disponibilité", "valeur": "Aucun", "brut": "N", "explication": "Arrêt ou ralentissement du service."}], "calculateur": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "specification": "https://www.first.org/cvss/v3.1/specification-document"}, "cvss4": null, "cwe": [{"id": "CWE-918", "nom": "Server-Side Request Forgery (SSRF)", "url": "https://cwe.mitre.org/data/definitions/918.html"}], "owasp": [{"code": "A01", "nom": "Contrôle d'accès défaillant", "nom_officiel": "Broken Access Control", "slug": "a01-controle-d-acces-defaillant", "libelle": "A01:2025 Contrôle d'accès défaillant", "url_officielle": "https://top10.owasp.org/2025/A01_2025-Broken_Access_Control/"}], "ssvc": {"lignes": [{"nom": "Exploitation", "valeur": "Exploitation active constatée", "brut": "active"}, {"nom": "Automatisable", "valeur": "Oui : l'attaque peut être enchaînée sans intervention humaine", "brut": "yes"}, {"nom": "Impact technique", "valeur": "Partiel : contrôle ou informations limités", "brut": "partial"}], "version": "2.0.3", "date": "2026-08-20", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2026-07-20", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2026-08-17", "libelle": "Publication de la vulnérabilité", "qui": "GitHub_M"}, {"date": "2026-08-19", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2026-08-20", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2026-09-02", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2026-10-05", "libelle": "Dernière mise à jour de la fiche source", "qui": "Source"}, {"date": "2026-10-15", "libelle": "Calcul du score EPSS affiché", "qui": "FIRST"}], "liens_officiels": [{"nom": "NVD (NIST)", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64849", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-64849", "description": "Enregistrement officiel publié par l'organisme qui a attribué l'identifiant."}, {"nom": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-64849", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2026-64849", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2026-64849", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Lfprojects", "product": "Mlflow", "ranges": ["de 3.3.0 à 3.15.0 (exclue)"], "first_unaffected": ["3.15.0"], "source": "NVD"}, {"vendor": "mlflow", "product": "mlflow", "ranges": [">= 3.3.0, < 3.15.0"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://github.com/mlflow/mlflow/pull/24258", "https://github.com/mlflow/mlflow/issues/24179", "https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk", "https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk", "https://nvd.nist.gov/vuln/detail/CVE-2026-64849"]}, "consulted_at": "2026-10-16T11:32:11.312310+00:00"}