{"id":"CVE-2026-77643","aliases":["AZL-96924","DEBIAN-CVE-2026-77643","EUVD-2026-63667","GHSA-955x-jgcw-hcxh","JLSEC-2026-1387","OESA-2026-4058","UBUNTU-CVE-2026-77643"],"status":"published","title":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian...","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00252,"percentile":0.16826,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-08-20T21:23:31Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Debian:13","package":"xapian-core","fixed_in":["1.4.29-3+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xapian-core","fixed_in":["1.4.32-1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"xapian-core","fixed_in":["1.4.23-2.oe2403sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"xapian-core","fixed_in":["1.4.23-2.oe2403sp3"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP4","package":"xapian-core","fixed_in":["1.4.32-1.oe2403sp4"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP4","package":"xapian-core","fixed_in":["1.4.9-3.oe2003sp4"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"xapian-core","fixed_in":["1.4.9-4.oe2203sp4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.4.26-2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.22-1","1.4.25-1","1.4.25-2","1.4.28-1","1.4.29-1","1.4.29-2","1.4.29-3","1.4.31-1","1.4.31-2","1.4.31-2~bpo13+1","1.4.32-1","1.4.32-1~bpo13+1","1.5.1-1","1.5.1-2","1.5.1-3","1.5.2-1","1.5.2-2","2.0.0-1","2.1.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.29-3+deb13u1"}]}],"versions":["1.4.29-3"]},{"source":"osv","ecosystem":"Debian:14","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.32-1"}]}],"versions":["1.4.29-3","1.4.31-1","1.4.31-2","1.4.31-2~bpo13+1","1.4.32-1~bpo13+1"]},{"source":"osv","ecosystem":"Julia","package":"xapian_jll","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.23-2.oe2403sp1"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.23-2.oe2403sp3"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.32-1.oe2403sp4"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP4","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.9-3.oe2003sp4"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.9-4.oe2203sp4"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.15-2","1.2.16-2","1.2.16-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.21-1.2","1.2.22-1","1.2.22-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4-2","1.4.5-1","1.4.5-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.12-1","1.4.14-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-3build1","1.4.18-4"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.22-1","1.4.22-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"xapian-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.29-3","1.4.29-3build1","1.4.31-2"]}],"products":[{"vendor":"xapian","product":"xapian-core"}],"references":[{"url":"https://bugs.debian.org/1144490","tags":["web"]},{"url":"https://lists.xapian.org/pipermail/xapian-devel/2026-August/003429.html","tags":["web","report"]},{"url":"https://trac.xapian.org/wiki/SecurityFixes/2018-07-02#a2026-08-13update","tags":["web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77643","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-955x-jgcw-hcxh","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-77643","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4058","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-77643","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77643","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-77643","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T21:23:31.317Z","modified":"2026-08-28T18:08:32.929Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:16.072351Z"}],"euvd":[{"id":"EUVD-2026-63667","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T21:23:31Z","modified":"2026-08-28T18:08:32Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:22.759915Z"}],"ghsa":[{"id":"GHSA-955x-jgcw-hcxh","title":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian...","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-21T00:31:23Z","modified":"2026-08-21T00:31:31Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:10:48.883791Z"}],"nvd":[{"id":"CVE-2026-77643","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T22:18:06.207Z","modified":"2026-10-18T20:10:00.11Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:40.302911Z"}],"osv":[{"id":"DEBIAN-CVE-2026-77643","description":"A cross-site scripting vulnerability in  queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T22:18:06.207Z","modified":"2026-10-23T17:47:42.624374195Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:46:03.502256Z"},{"id":"JLSEC-2026-1387","title":"A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian...","description":"A cross-site scripting vulnerability in\n`queryparser/termgenerator_internal.cc` in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-24T18:22:23.922Z","modified":"2026-08-24T18:51:32.380120882Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:47:18.159338Z"},{"id":"OESA-2026-4058","title":"xapian-core security update","description":"Xapian is an Open Source Search Engine Library, released under the GPL v2+. It is a highly adaptable toolkit which allows developers to easily add advanced indexing and search facilities to their own applications. It has built-in support for several families of weighting models and also supports a rich set of boolean query operators.\r\n\r\nSecurity Fix(es):\n\nA cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.(CVE-2026-77643)","status":"published","published":"2026-09-25T01:27:48Z","modified":"2026-09-25T01:45:08.302419Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"UBUNTU-CVE-2026-77643","description":"A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T22:18:00Z","modified":"2026-09-02T19:36:34.327128484Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"AZL-96924","title":"CVE-2026-77643 affecting package xapian-core 1.4.26-2","description":"A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.","status":"published","published":"2026-08-20T22:18:06Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:26.280152Z"}]}}