{"id":"CVE-2026-78384","revision":"4c56c46d425e44759ee2444b5b75e05b","records":[{"revision":"4c56c46d425e44759ee2444b5b75e05b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-78384","aliases":[],"title":"Apache CXF: Unbounded DEFLATE Decompression in CXF JOSE/JWE and SAML Processing (Decompression Bomb)","description":"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. 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.","state":0,"publishedAt":"2026-10-09T10:18:00.617+00:00","modifiedAt":"2026-10-15T16:16:44.354+00:00","affected":[{"ecosystem":"https://repo.maven.apache.org/maven2","name":"org.apache.cxf:cxf-core","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Apache Software Foundation\",\n                    \"product\": \"Apache CXF\",\n                    \"collectionURL\": \"https://repo.maven.apache.org/maven2\",\n                    \"packageName\": \"org.apache.cxf:cxf-core\",\n                    \"packageURL\": \"pkg:maven/org.apache.cxf/cxf-core\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.2.0\",\n                            \"lessThan\": \"4.2.4\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.0.0\",\n                            \"lessThan\": \"4.1.9\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.6.13\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[],"references":["https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-78384","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-78384","identifiers":["CVE-2026-78384"]},"retained":false,"historicalAffected":[]}],"coverage":[]}