{"item": {"cve_id": "CVE-2026-34486", "ghsa_id": "", "osv_id": "", "title": "Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor", "description": "Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.\n\nThis issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.", "published_at": "2026-04-09T20:16:25.063", "modified_at": "2026-09-21T19:17:04.670", "vendor": "Apache", "product": "Tomcat", "affected_versions": ["11.0.20", "10.1.53", "9.0.116"], "fixed_versions": [], "cvss_score": 7.5, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "severity": "HIGH", "epss_score": 0.06561, "epss_percentile": 0.93729, "epss_date": "2026-10-15", "is_kev": true, "kev_date": "2026-08-04", "kev_due_date": "2026-08-07", "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-311", "CWE-807"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "NONE", "user_interaction": "NONE", "references": ["https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly", "https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat", "https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat", "https://access.redhat.com/errata/RHSA-2026:36787", "https://access.redhat.com/errata/RHSA-2026:36788", "https://access.redhat.com/errata/RHSA-2026:36789", "https://access.redhat.com/errata/RHSA-2026:36790", "https://access.redhat.com/errata/RHSA-2026:36876", "https://access.redhat.com/errata/RHSA-2026:36877", "https://access.redhat.com/errata/RHSA-2026:36878", "https://access.redhat.com/errata/RHSA-2026:36879", 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"product": "Tomcat", "ranges": ["9.0.116", "10.1.53", "11.0.20"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Jboss Web Server", "ranges": ["7.0.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux", "ranges": ["8.0", "9.0", "10.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux Els", "ranges": ["7.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux Eus", "ranges": ["10.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux Tus", "ranges": ["8.8"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux Update Services For Sap Solutions", "ranges": ["8.8", "9.2", "9.4", "9.6"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Apache Software Foundation", "product": "Apache Tomcat", "ranges": ["11.0.20", "10.1.53", "9.0.116"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Apache Tomcat Missing Encryption of Sensitive Data Vulnerability", "kev_short_description": "Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.", "kev_ransomware": "Unknown", "kev_notes": "https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly ; 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-2026-34486", "kev_cwes": ["CWE-311"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 68, "risk_class": "Important", "impact": {"confidentialite": "élevé", "integrite": "aucun", "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.", "basis": "CVSS 3.1"}, "mechanism": "Absence de chiffrement de données sensibles.", "mitigation": {"correction": {"available": false, "text": "Correctif non identifié dans les sources consultées. Appliquer la mise à jour de l'éditeur dès qu'elle est disponible."}, "mitigation": {"specific": "1 source publie une mesure de contournement étiquetée comme telle : consultez-la avant d'agir, elle fait foi.", "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": ["https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat"]}, "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. 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Traiter en priorité les machines accessibles depuis Internet. Pour un service hébergé en nuage, suivre les consignes de l'hébergeur. Ne cesser d'utiliser le produit que si l'éditeur ne publie aucune mesure.", "action_kind": "official", "concerned": [{"version": "11.0.20, 10.1.53, 9.0.116", "state": "hit", "state_label": "Concerné", "todo": "Action officielle recommandée par la CISA : Appliquer les correctifs et les mesures de contournement publiés par l'éditeur, en suivant ses instructions. Traiter en priorité les machines accessibles depuis Internet. Pour un service hébergé en nuage, suivre les consignes de l'hébergeur. Ne cesser d'utiliser le produit que si l'éditeur ne publie aucune mesure."}, {"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": "Action officielle recommandée par la CISA : Appliquer les correctifs et les mesures de contournement publiés par l'éditeur, en suivant ses instructions. Traiter en priorité les machines accessibles depuis Internet. Pour un service hébergé en nuage, suivre les consignes de l'hébergeur. Ne cesser d'utiliser le produit que si l'éditeur ne publie aucune mesure", "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": "Correctif non identifié dans les sources", "affected_label": "11.0.20, 10.1.53, 9.0.116"}, "severity_display": "Élevée", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2026-34486", "severity_fr": "Élevée", "epss_pct": 6.6, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2026-04-09", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34486"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par 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