{"id":"CVE-2026-90797","title":"Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session","summary":"An unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any remote client to cause a denial of service via memory exhaustion.\nUsers are recommended to upgrade to version 3.5.3, which fi…","severity":"high","cvss":7.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/S:N/AU:Y/R:A/V:D/RE:M/U:Red","cvssSource":"cna","vendor":"Apache Software Foundation","product":"Apache CouchDB","affected":["apache_couchdb < 3.5.3"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-20T16:52:22.312441Z"},"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T18:10:06.210Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90797","references":[{"url":"https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f"},{"url":"https://lists.apache.org/thread/gsbotof0qn8x6zlpd7t568ny4053jo0n"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.309Z","slug":"CVE-2026-90797","body":"## Overview\n\nAn unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any remote client to cause a denial of service via memory exhaustion.\nUsers are recommended to upgrade to version 3.5.3, which fixes this issue.\n\n## Affected\n\n- `apache_couchdb < 3.5.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}