{"id":"CVE-2026-78384","state":"PUBLISHED","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.","publishedAt":"2026-10-09T10:18:00.617Z","updatedAt":"2026-10-15T16:16:44.354Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache CXF"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache CXF","packageName":"org.apache.cxf:cxf-core","packageURL":"pkg:maven/org.apache.cxf/cxf-core","defaultStatus":"unaffected","versions":[{"version":"4.2.0","status":"affected","lessThan":"4.2.4","versionType":"semver"},{"version":"4.0.0","status":"affected","lessThan":"4.1.9","versionType":"semver"},{"version":"0","status":"affected","lessThan":"3.6.13","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":["https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q","http://www.openwall.com/lists/oss-security/2026/10/09/6"],"weaknesses":["CWE-409"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/78xxx/CVE-2026-78384.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-78384","state":"PUBLISHED","datePublished":"2026-10-09T10:18:00.617Z","dateUpdated":"2026-10-15T16:16:44.354Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-08-24T13:44:56.686Z"},"containers":{"cna":{"title":"Apache CXF: Unbounded DEFLATE Decompression in CXF JOSE/JWE and SAML Processing (Decompression Bomb)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache CXF","packageName":"org.apache.cxf:cxf-core","packageURL":"pkg:maven/org.apache.cxf/cxf-core","defaultStatus":"unaffected","versions":[{"version":"4.2.0","status":"affected","lessThan":"4.2.4","versionType":"semver"},{"version":"4.0.0","status":"affected","lessThan":"4.1.9","versionType":"semver"},{"version":"0","status":"affected","lessThan":"3.6.13","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":[{"url":"https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"moderate"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-10-09T10:18:00.617Z"},"source":{"discovery":"EXTERNAL"},"credits":[{"lang":"en","value":"Guanping Zhang reported this vulnerability.","type":"finder"}],"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/09/6"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-10-09T11:07:58.947Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T16:16:04.446034Z","id":"CVE-2026-78384","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-409","type":"CWE","lang":"en","description":"CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T16:16:44.354Z"}}]}}}