CVE-2026-53434

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Apache Tomcat", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "11.0.22", "status": "affected", "version": "11.0.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "10.1.55", "status": "affected", "version": "10.1.0-M7", "versionType": "semver"}, {"lessThanOrEqual": "9.0.118", "status": "affected", "version": "9.0.83", "versionType": "semver"}, {"lessThanOrEqual": "9.0.82", "status": "unaffected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "C19FB4AD-3706-4F58-9E0D-C530561C058C", "versionEndExcluding": "9.0.119", "versionStartIncluding": "9.0.83", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "4A8C20B4-DBE1-4890-AD5E-D5EABB6B739D", "versionEndExcluding": "10.1.56", "versionStartIncluding": "10.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "C43AD2A0-8785-4A37-AAAE-347B1E0463F1", "versionEndExcluding": "11.0.23", "versionStartIncluding": "11.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118.\n\nUsers are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue."}, {"lang": "es", "value": "Detecci\u00f3n de Condici\u00f3n de Error Sin Acci\u00f3n vulnerabilidad en Apache Tomcat al configurar CRLs para un conector basado en FFM.\n\nEste problema afecta a Apache Tomcat: desde 11.0.0-M1 hasta 11.0.22, desde 10.1.0-M7 hasta 10.1.55, desde 9.0.83 hasta 9.0.118.\n\nSe recomienda a los usuarios actualizar a la versi\u00f3n 11.0.23, 10.1.56 o 9.0.119, que soluciona el problema."}], "id": "CVE-2026-53434", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53434", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-30T12:28:14.286092Z", "version": "2.0.3"}}]}, "published": "2026-06-29T21:16:44.937", "references": [{"source": "security@apache.org", "tags": ["Vendor Advisory", "Mailing List"], "url": "https://lists.apache.org/thread/x510lbq0sfrd1qyo7q3r1mpllgpdcosk"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/06/29/22"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-390"}], "source": "security@apache.org", "type": "Secondary"}]}

{"bugzilla": {"description": "tomcat: Apache Tomcat: Error condition not handled when configuring CRLs", "id": "2494668", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2494668"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-390", "details": ["A flaw was found in Apache Tomcat. When configuring Certificate Revocation Lists (CRLs) for a FFM (presumably a specific type of connector), the system fails to detect and act upon an error condition. This oversight could lead to unexpected behavior or a security bypass, as the intended security controls might not be properly enforced."], "mitigation": {"lang": "en:us", "value": "This vulnerability only affects Tomcat deployments using the FFM-based connector (requires Java 22+) with CRL-based certificate revocation checking. Deployments using the standard NIO/NIO2 connectors or not using CRL checking are not affected."}, "name": "CVE-2026-53434", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "tomcat9", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "tomcat6", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "tomcat10", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "tomcat11", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5", "fix_state": "Fix deferred", "package_name": "jws5-tomcat", "product_name": "Red Hat JBoss Web Server 5"}], "public_date": "2026-06-29T20:41:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53434\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53434\nhttps://lists.apache.org/thread/x510lbq0sfrd1qyo7q3r1mpllgpdcosk"], "statement": "A flaw was found in Apache Tomcat. When using the FFM-based connector with CRL-based certificate revocation checking, an error in CRL data processing is not handled correctly, potentially allowing revoked certificates to be accepted. This only affects Tomcat 10.1.0-M7+ and 11.x using the FFM connector (Java 22+ Foreign Function & Memory API) with CRL configuration \u2014 an extremely narrow set of conditions not present in standard Red Hat deployments.", "threat_severity": "Low"}

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