{"schemaVersion":3,"id":"CVE-2026-78384","aliases":[],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-10-09T10:18:00.617Z","modified":"2026-10-15T16:16:44.354Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00279,"percentile":0.19049,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-10T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00279,"percentile":0.19049}],"last30":[{"date":"2026-10-10T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00159,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00279,"percentile":0.19049}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-409","name":"Improper Handling of Highly Compressed Data (Data Amplification)","description":"The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/409.html"}],"affected":[{"vendor":"apache software foundation","product":"apache cxf","name":"Apache CXF","label":"apache cxf","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.2.0, < 4.2.4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 4.0.0, < 4.1.9","noFixRecorded":false,"fixedIn":null},{"text":"< 3.6.13","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.2.0, < 4.2.4 | ≥ 4.0.0, < 4.1.9 | < 3.6.13","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_cxf"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q","label":"lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3q","hostname":"lists.apache.org","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/09/6","label":"www.openwall.com/lists/oss-security/2026/10/09/6","hostname":"www.openwall.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-09T10:18:00.617Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T16:16:44.354Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T03:56:05.706Z","stale":false,"partial":false}}