{"id":"CVE-2026-95616","title":"An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation","summary":"An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-190"],"vendor":"apache","product":"wss4j","affected":["wss4j < 2.4.4","wss4j >= 3.0.0, < 3.0.6","wss4j >= 4.0.0, < 4.0.2"],"patched":["wss4j 4.0.2"],"published":"2026-09-30","updated":"2026-10-06","sourceUpdated":"2026-10-06T17:21:33.233","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-95616","references":[{"url":"https://lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hct","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/30/14","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.00409,"epssPercentile":0.34963,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-30T12:43:35.342143Z"},"ingestedAt":"2026-09-30T13:03:51.968Z","slug":"CVE-2026-95616","body":"## Overview\n\nAn integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature's key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory.\nUsers are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.\n\n## Affected\n\n- `wss4j < 2.4.4`\n- `wss4j >= 3.0.0, < 3.0.6`\n- `wss4j >= 4.0.0, < 4.0.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `wss4j 4.0.2`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}