{"id":"CVE-2026-78384","title":"CompressionUtils.inflate() decompressed attacker-controlled DEFLATE data with no output-size cap","summary":"CompressionUtils.inflate() decompressed attacker-controlled DEFLATE data with no output-size cap. A small (~KB) crafted payload could expand to gigabytes on the heap. Reachable via JWE decryption when zip=DEF (e.g. JoseSessionTokenProvid…","severity":"none","published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T16:33:39.007","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78384","references":[{"url":"https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/09/6","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"ingestedAt":"2026-10-09T12:53:29.300Z","slug":"CVE-2026-78384","body":"## Overview\n\nCompressionUtils.inflate() decompressed attacker-controlled DEFLATE data with no output-size cap. A small (~KB) crafted payload could expand to gigabytes on the heap. Reachable via JWE decryption when zip=DEF (e.g. JoseSessionTokenProvider with RSA-OAEP key wrap) and via SAML redirect/POST binding token inflation — in both cases decompression happens before/independent of trust validation.\n\nFix: Added a configurable maximum inflated-size cap (default 10 MiB, org.apache.cxf.compression-max-inflated-size system property) to CompressionUtils.inflate(); aborts with DataFormatException once exceeded.\nUsers are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}