{"id":"CVE-2021-35197","aliases":["BIT-mediawiki-2021-35197","DEBIAN-CVE-2021-35197","DLA-2779-1","DSA-4979-1","EUVD-2021-21841","GHSA-8hhg-q8jv-q9c7","MGASA-2021-0346","UBUNTU-CVE-2021-35197"],"status":"published","title":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots...","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01943,"percentile":0.80315,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-668","CWE-863"],"published":"2021-07-02T12:28:45Z","modified":"2026-10-24T10:30:32Z","fixes":[{"ecosystem":"Bitnami","package":"mediawiki","fixed_in":["1.31.15","1.35.3","1.36.1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.35.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.35.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.35.3-1"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"mediawiki","fixed_in":["1.31.15-1.mga7"],"sources":["osv"]},{"ecosystem":"Mageia:8","package":"mediawiki","fixed_in":["1.35.3-1.1.mga8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mediawiki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.31.15"},{"introduced":"1.32.0"},{"fixed":"1.35.3"},{"introduced":"1.36.0"},{"fixed":"1.36.1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.3-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.7-1~deb9u10"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-1~bpo8+1","1:1.27.4-1~deb9u1","1:1.27.4-2","1:1.27.4-3","1:1.27.5-1~deb9u1","1:1.27.6-1~deb9u1","1:1.27.7-1~deb9u1","1:1.27.7-1~deb9u2","1:1.27.7-1~deb9u3","1:1.27.7-1~deb9u4","1:1.27.7-1~deb9u5","1:1.27.7-1~deb9u6","1:1.27.7-1~deb9u7","1:1.27.7-1~deb9u8","1:1.27.7-1~deb9u9"],"bundled":3},{"source":"osv","ecosystem":"Debian:10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.16-1~deb10u1"}]}],"versions":["1:1.31.10-1~deb10u1","1:1.31.12-1~deb10u1","1:1.31.14-1~deb10u1","1:1.31.2-1","1:1.31.4-1","1:1.31.4-1~deb10u1","1:1.31.5-1","1:1.31.5-2","1:1.31.5-3","1:1.31.6-1","1:1.31.6-1~deb10u1","1:1.31.7-1","1:1.31.7-1~deb10u1","1:1.31.8-1"],"bundled":5},{"source":"osv","ecosystem":"Debian:11","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.4-1~deb11u1"}]}],"versions":["1:1.35.2-1","1:1.35.3-1"],"bundled":5},{"source":"osv","ecosystem":"Mageia:7","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.15-1.mga7"}]}]},{"source":"osv","ecosystem":"Mageia:8","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.35.3-1.1.mga8"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-2","1:1.27.4-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.31.2-1ubuntu1","1:1.31.5-1","1:1.31.5-1ubuntu1","1:1.31.5-2","1:1.31.5-3","1:1.31.5-3ubuntu1","1:1.31.6-1","1:1.31.7-1","1:1.31.7-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.35.3-1","1:1.35.4-1","1:1.35.5-1","1:1.35.5-1ubuntu1","1:1.35.5-1ubuntu2","1:1.35.5-1ubuntu3","1:1.35.6-1","1:1.35.6-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.39.4-2","1:1.39.5-1","1:1.39.6-1","1:1.39.7-1","1:1.39.7-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.1+dfsg-1","1:1.43.1+dfsg-2","1:1.43.3+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.8+dfsg-2","1:1.43.9+dfsg-1","1:1.43.9+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.3+dfsg-1","1:1.43.5+dfsg-1","1:1.43.6+dfsg-2","1:1.43.8+dfsg-1","1:1.43.8+dfsg-2"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://phabricator.wikimedia.org/T280226","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","web","evidence","report"]},{"url":"https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce%40lists.wikimedia.org/thread/YR3X4L2CPSEJVSY543AWEO65TD6APXHP/","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202107-40","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://www.debian.org/security/2021/dsa-4979","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00003.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","web","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35197","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/"},{"url":"https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/YR3X4L2CPSEJVSY543AWEO65TD6APXHP/"},{"url":"https://github.com/advisories/GHSA-8hhg-q8jv-q9c7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-35197","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0346.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29190","tags":["report"]},{"url":"https://www.mediawiki.org/wiki/Release_notes/1.35#MediaWiki_1.35.3","tags":["web"]},{"url":"https://www.mediawiki.org/wiki/MediaWiki_1.31","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-35197","tags":["report"]},{"url":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/YR3X4L2CPSEJVSY543AWEO65TD6APXHP/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-35197","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T12:28:45Z","modified":"2024-08-04T00:33:51.175Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21841","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T12:28:45Z","modified":"2024-08-04T00:33:51Z","updated_at":"2026-11-03T03:24:30.986651Z"}],"ghsa":[{"id":"GHSA-8hhg-q8jv-q9c7","title":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots...","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2022-05-24T19:06:53Z","modified":"2023-01-27T05:03:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:42:16.196802Z"}],"nvd":[{"id":"CVE-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T13:15:07.727Z","modified":"2026-06-17T03:57:16.817Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/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-863"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T13:15:07.727Z","modified":"2026-10-24T10:30:32.710032051Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:20.13324Z"},{"id":"DEBIAN-CVE-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T13:15:07.727Z","modified":"2026-10-23T18:03:14.107612248Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2021-07-02T13:15:00Z","modified":"2026-10-17T12:55:53.902078529Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:27.870979Z"},{"id":"BIT-mediawiki-2021-35197","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a \"sitewide block\" applied, it is able to still \"purge\" pages through the MediaWiki Action API (which a \"sitewide block\" should have prevented).","status":"published","published":"2024-03-06T11:11:44.011Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"DLA-2779-1","title":"mediawiki - security update","status":"published","published":"2021-10-09T00:00:00Z","modified":"2026-03-09T01:19:08.000356Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DSA-4979-1","title":"mediawiki - security update","status":"published","published":"2021-10-01T00:00:00Z","modified":"2026-03-09T02:10:09.371177Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2021-0346","title":"Updated mediawiki packages fix a security vulnerability","description":"In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x\nbefore 1.36.1, bots have certain unintended API access. When a bot account has\na \"sitewide block\" applied, it is able to still \"purge\" pages through the\nMediaWiki Action API (which a \"sitewide block\" should have prevented)\n(CVE-2021-35197).\n\nThe mediawiki packages are upgraded to latest version for their branches.\nSee upstream release notes for other bugfixes.\n","status":"published","published":"2021-07-12T20:26:21Z","modified":"2026-04-16T04:43:07.762453786Z","updated_at":"2026-11-02T15:49:41.509337Z"}]}}