{"id":"CVE-2026-90797","aliases":["BIT-couchdb-2026-90797","EUVD-2026-105156","GHSA-r5m6-9384-3274","UBUNTU-CVE-2026-90797"],"status":"published","title":"Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session","description":"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 fixes this issue.","severity":{"version":"4.0","score":7.7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00669,"percentile":0.52238,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-409"],"published":"2026-10-20T15:39:23Z","modified":"2026-10-29T10:45:06Z","fixes":[{"ecosystem":"Bitnami","package":"couchdb","fixed_in":["3.5.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"couchdb","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.3"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"couchdb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-0ubuntu7"]}],"products":[{"vendor":"apache software foundation","product":"apache couchdb"}],"references":[{"url":"https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f","tags":["release-notes","web"]},{"url":"https://lists.apache.org/thread/gsbotof0qn8x6zlpd7t568ny4053jo0n","tags":["vendor-advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/20/12","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90797","tags":["web"]},{"url":"https://github.com/advisories/GHSA-r5m6-9384-3274"},{"url":"https://ubuntu.com/security/CVE-2026-90797","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90797","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-90797","title":"Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session","description":"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 fixes this issue.","status":"published","published":"2026-10-20T15:39:23.376Z","modified":"2026-10-20T18:10:06.21Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T13:45:47.885058Z"}],"euvd":[{"id":"EUVD-2026-105156","description":"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 fixes this issue.","status":"published","published":"2026-10-20T15:39:23Z","modified":"2026-10-20T18:10:06Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:59:43.145678Z"}],"ghsa":[{"id":"GHSA-r5m6-9384-3274","title":"An unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all...","description":"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 fixes this issue.","status":"published","published":"2026-10-20T18:31:46Z","modified":"2026-10-20T21:31:01Z","cvss":[{"version":"4.0","score":7.7,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:D/RE:M/U:Red","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T15:14:04.750771Z"}],"nvd":[{"id":"CVE-2026-90797","description":"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 fixes this issue.","status":"published","published":"2026-10-20T16:17:15.643Z","modified":"2026-10-20T19:34:00.7Z","cvss":[{"version":"4.0","score":7.7,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:D/RE:M/U:Red","level":"high","assessor":"secondary"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:13:01.161484Z"}],"osv":[{"id":"UBUNTU-CVE-2026-90797","description":"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. Users are recommended to upgrade to version 3.5.3, which fixes this issue.","status":"published","published":"2026-10-20T16:17:00Z","modified":"2026-10-28T20:16:05.287121292Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:57:40.980117Z"},{"id":"BIT-couchdb-2026-90797","title":"Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session","description":"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 fixes this issue.","status":"published","published":"2026-10-29T08:39:45.657Z","modified":"2026-10-29T10:45:06.858371535Z","updated_at":"2026-11-02T15:28:28.70813Z"}]}}