{"id":"CVE-2017-8814","aliases":["DEBIAN-CVE-2017-8814","DSA-4036-1","EUVD-2017-17757","GHSA-x2m4-j2wv-q4h4","MGASA-2017-0429"],"status":"published","title":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2...","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01606,"percentile":0.76037,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-11-15T00:00:00Z","modified":"2026-10-24T10:30:26Z","fixes":[{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.27.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.27.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.27.4-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.4-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.4-1~deb9u1"}]}],"versions":["1:1.27.3-1","1:1.27.4-1~bpo8+1"],"bundled":7},{"source":"osv","ecosystem":"Mageia:6","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.27.4-1.mga6"}]}],"bundled":8}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"http://www.securitytracker.com/id/1039812","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Patch","Vendor Advisory","fix","web"]},{"url":"https://www.debian.org/security/2017/dsa-4036","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-8814"},{"url":"https://github.com/advisories/GHSA-x2m4-j2wv-q4h4"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-8814","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2017-0429.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=22038","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-8814","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2017-11-15T08:00:00Z","modified":"2024-08-05T16:48:21.905Z","updated_at":"2026-11-02T14:33:15.201133Z"}],"euvd":[{"id":"EUVD-2017-17757","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2017-11-15T08:00:00Z","modified":"2024-08-05T16:48:21Z","updated_at":"2026-11-03T02:23:29.67797Z"}],"ghsa":[{"id":"GHSA-x2m4-j2wv-q4h4","title":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2...","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2022-05-17T00:21:09Z","modified":"2023-02-03T05:01:26Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:52:58.812908Z"}],"nvd":[{"id":"CVE-2017-8814","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2017-11-15T08:29:00.78Z","modified":"2026-06-17T01:27:00.497Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:08.635428Z"}],"osv":[{"id":"CVE-2017-8814","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2017-11-15T08:29:00.78Z","modified":"2026-10-24T10:30:26.375228242Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:06.868403Z"},{"id":"DEBIAN-CVE-2017-8814","description":"The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by \"a lot of junk.\"","status":"published","published":"2017-11-15T08:29:00.78Z","modified":"2026-09-01T20:03:51.122959054Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:29.698576Z"},{"id":"DSA-4036-1","title":"mediawiki - security update","status":"published","published":"2017-11-15T00:00:00Z","modified":"2026-03-09T01:20:22.066016Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"MGASA-2017-0429","title":"Updated mediawiki packages fix security vulnerabilities","description":"XSS when $wgShowExceptionDetails = false and browser sends non-standard\nurl escaping (CVE-2017-8808).\n\nReflected File Download from api.php (CVE-2017-8809).\n\nOn private wikis, login form shouldn't distinguish between login failure\ndue to bad username and bad password (CVE-2017-8810).\n\nIt's possible to mangle HTML via raw message parameter expansion\n(CVE-2017-8811).\n\nThe id attribute on headlines allow raw \u003e (CVE-2017-8812).\n\nLanguage converter can be tricked into replacing text inside tags by\nadding a lot of junk after the rule definition (CVE-2017-8814).\n\nLanguage converter: unsafe attribute injection via glossary rules\n(CVE-2017-8815).\n\ncomposer.json has require-dev versions of PHPUnit with known security\nissues (CVE-2017-9841).\n\nNote that MediaWiki 1.23.x on Mageia 5 is no longer supported.  Those\nusing the mediawiki package on Mageia 5 should upgrade to Mageia 6.\n","status":"published","published":"2017-11-29T18:52:42Z","modified":"2026-04-16T06:26:00.547690493Z","updated_at":"2026-11-02T15:49:40.442238Z"}]}}