{"id":"CVE-2026-59153","aliases":["DEBIAN-CVE-2026-59153","EUVD-2026-42112","GHSA-869j-r97x-hx2g","PYSEC-2026-3459","UBUNTU-CVE-2026-59153"],"status":"published","title":"Anki's local HTTP server does not sufficiently validate requests","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","severity":{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00264,"percentile":0.18464,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22","CWE-346"],"published":"2026-06-19T22:10:57Z","modified":"2026-10-28T02:30:23Z","fixes":[{"ecosystem":"PyPI","package":"aqt","fixed_in":["25.9.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"aqt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"25.9.2"},{"fixed":"25.9.3"}]}]},{"source":"osv","ecosystem":"PyPI","package":"aqt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"25.9.3"}]}],"versions":["2.1.24","2.1.25","2.1.26","2.1.28","2.1.29","2.1.30","2.1.31","2.1.32","2.1.33","2.1.34","2.1.35","2.1.36","2.1.37","2.1.37rc1","2.1.38","2.1.38b1","2.1.38b2","2.1.38b3","2.1.38b4","2.1.39","2.1.39b1","2.1.39b2","2.1.40","2.1.41","2.1.41b1","2.1.41b2","2.1.41b3","2.1.41b4","2.1.41b5","2.1.41b6","2.1.41b7","2.1.42","2.1.43","2.1.43b1","2.1.44","2.1.44b1","2.1.45","2.1.45a1","2.1.45a2","2.1.45a3","2.1.45a4","2.1.45b1","2.1.45b2","2.1.45b3","2.1.45b4","2.1.45b5","2.1.45b6","2.1.45rc1","2.1.45rc2","2.1.46","2.1.46rc1","2.1.47","2.1.47rc1","2.1.47rc2","2.1.48","2.1.48rc1","2.1.48rc2","2.1.49","2.1.50","2.1.50b1","2.1.50b2","2.1.50b3","2.1.50b4","2.1.50b5","2.1.50b6","2.1.50b7","2.1.50b8","2.1.50b9","2.1.50rc1","2.1.50rc2","2.1.50rc3","2.1.50rc4","2.1.51","2.1.51rc1","2.1.51rc2","2.1.52","2.1.52rc1","2.1.52rc2","2.1.52rc3","2.1.53","2.1.53rc1","2.1.53rc2","2.1.54","2.1.54rc1","2.1.54rc2","2.1.54rc3","2.1.55","2.1.55b1","2.1.55b2","2.1.55b3","2.1.55b4","2.1.55b6","2.1.55b7","2.1.55rc1","2.1.55rc2","2.1.56","2.1.56rc1","2.1.57","2.1.57b1","2.1.57rc1","2.1.58","2.1.59","2.1.60","2.1.61","2.1.61b1","2.1.61b2","2.1.62","2.1.62b1","2.1.62rc1","2.1.63","2.1.64","2.1.65","2.1.66","2.1.66b1","2.1.66rc1","23.10","23.10.1","23.10.1rc1","23.10.1rc2","23.10b1","23.10b2","23.10b3","23.10b4","23.10b5","23.10b6","23.10rc1","23.10rc2","23.10rc3","23.12","23.12.1","23.12b1","23.12b2","23.12b3","23.12rc1","24.10b1","24.10b2","24.10b3","24.10b4","24.10rc1","24.10rc2","24.11","24.11rc1","24.11rc2","24.4","24.4.1","24.4rc1","24.4rc2","24.6","24.6.1","24.6.2","24.6.3","25.1b1","25.1rc1","25.2","25.2.1","25.2.2","25.2.3","25.2.4","25.2.5","25.2.6","25.2.7","25.2rc1","25.5b1","25.5b2","25.6b1","25.6b2","25.6b3","25.6b4","25.6b5","25.6b6","25.6b7","25.7","25.7.1","25.7.2","25.7.3","25.7.3rc1","25.7.4","25.7.5","25.8b1","25.8b2","25.8b3","25.8b4","25.8b5","25.9","25.9.1","25.9.2","25.9rc1"]},{"source":"osv","ecosystem":"PyPI","package":"aqt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"25.9.3"}]}],"versions":["2.1.24","2.1.25","2.1.26","2.1.28","2.1.29","2.1.30","2.1.31","2.1.32","2.1.33","2.1.34","2.1.35","2.1.36","2.1.37","2.1.37rc1","2.1.38","2.1.38b1","2.1.38b2","2.1.38b3","2.1.38b4","2.1.39","2.1.39b1","2.1.39b2","2.1.40","2.1.41","2.1.41b1","2.1.41b2","2.1.41b3","2.1.41b4","2.1.41b5","2.1.41b6","2.1.41b7","2.1.42","2.1.43","2.1.43b1","2.1.44","2.1.44b1","2.1.45","2.1.45a1","2.1.45a2","2.1.45a3","2.1.45a4","2.1.45b1","2.1.45b2","2.1.45b3","2.1.45b4","2.1.45b5","2.1.45b6","2.1.45rc1","2.1.45rc2","2.1.46","2.1.46rc1","2.1.47","2.1.47rc1","2.1.47rc2","2.1.48","2.1.48rc1","2.1.48rc2","2.1.49","2.1.50","2.1.50b1","2.1.50b2","2.1.50b3","2.1.50b4","2.1.50b5","2.1.50b6","2.1.50b7","2.1.50b8","2.1.50b9","2.1.50rc1","2.1.50rc2","2.1.50rc3","2.1.50rc4","2.1.51","2.1.51rc1","2.1.51rc2","2.1.52","2.1.52rc1","2.1.52rc2","2.1.52rc3","2.1.53","2.1.53rc1","2.1.53rc2","2.1.54","2.1.54rc1","2.1.54rc2","2.1.54rc3","2.1.55","2.1.55b1","2.1.55b2","2.1.55b3","2.1.55b4","2.1.55b6","2.1.55b7","2.1.55rc1","2.1.55rc2","2.1.56","2.1.56rc1","2.1.57","2.1.57b1","2.1.57rc1","2.1.58","2.1.59","2.1.60","2.1.61","2.1.61b1","2.1.61b2","2.1.62","2.1.62b1","2.1.62rc1","2.1.63","2.1.64","2.1.65","2.1.66","2.1.66b1","2.1.66rc1","23.10","23.10.1","23.10.1rc1","23.10.1rc2","23.10b1","23.10b2","23.10b3","23.10b4","23.10b5","23.10b6","23.10rc1","23.10rc2","23.10rc3","23.12","23.12.1","23.12b1","23.12b2","23.12b3","23.12rc1","24.10b1","24.10b2","24.10b3","24.10b4","24.10rc1","24.10rc2","24.11","24.11rc1","24.11rc2","24.4","24.4.1","24.4rc1","24.4rc2","24.6","24.6.1","24.6.2","24.6.3","25.1b1","25.1rc1","25.2","25.2.1","25.2.2","25.2.3","25.2.4","25.2.5","25.2.6","25.2.7","25.2rc1","25.5b1","25.5b2","25.6b1","25.6b2","25.6b3","25.6b4","25.6b5","25.6b6","25.6b7","25.7","25.7.1","25.7.2","25.7.3","25.7.3rc1","25.7.4","25.7.5","25.8b1","25.8b2","25.8b3","25.8b4","25.8b5","25.9","25.9.1","25.9.2","25.9rc1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"anki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.32+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"anki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0+dfsg~a12-0.1","2.1.0+dfsg~b24-1","2.1.0+dfsg~b25-1","2.1.0+dfsg~b26-1","2.1.0+dfsg~b27-1","2.1.0+dfsg~b29-1","2.1.0+dfsg~b31-1","2.1.0+dfsg~b33-1","2.1.0+dfsg~b34-1","2.1.0+dfsg~b35-1","2.1.0+dfsg~b36-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"anki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.8+dfsg-1ubuntu1","2.1.15+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"anki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.15+dfsg-3","2.1.15+dfsg-3ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"anki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.15+dfsg-3ubuntu1","2.1.15+dfsg-3ubuntu2","2.1.15+dfsg-3ubuntu3","2.1.15+dfsg-3ubuntu4","2.1.15+dfsg-3ubuntu4.1"]}],"products":[{"vendor":"ankitects","product":"anki"}],"references":[{"url":"https://github.com/ankitects/anki/security/advisories/GHSA-869j-r97x-hx2g","tags":["x_refsource_CONFIRM","advisory","web","report"]},{"url":"https://github.com/ankitects/anki/commit/858e5689d0e4fd24f74856c7e8f245412694a219","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/ankitects/anki/releases/tag/25.09.3","tags":["x_refsource_MISC","web"]},{"url":"https://x.com/taviso/status/2051310678800253318","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59153","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-869j-r97x-hx2g","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59153.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-59153","tags":["advisory"]},{"url":"https://github.com/ankitects/anki","tags":["package"]},{"url":"https://pypi.org/project/aqt","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-59153","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59153","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-59153","title":"Anki's local HTTP server does not sufficiently validate requests","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"published","published":"2026-07-07T21:11:01.808Z","modified":"2026-07-08T13:50:15.783Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-42112","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"published","published":"2026-07-07T21:11:01Z","modified":"2026-07-08T13:50:15Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T18:20:11.058935Z"}],"ghsa":[{"id":"GHSA-869j-r97x-hx2g","title":"Anki's local HTTP server does not sufficiently validate requests","description":"## Summary\n\nAnki launches a local HTTP server to serve media files and web pages for parts of its interface. While the server has a CORS setup, requests from other origins were not blocked, allowing malicious websites to potentially trigger side-effecting requests.\n\n## Browser impact\n\nThe severity varies by browser because of Private Network Access (PNA), a newer spec that restricts web pages from making requests to localhost/local network addresses:\n\nChrome/Chromium (including Edge, Brave): Largely protected, as Chrome has implemented PNA restrictions for several years and now puts local network access behind a permission prompt.\nSafari: Hasn't implemented PNA yet, though macOS has some OS-level protections.\nFirefox: Most vulnerable — hasn't implemented PNA yet, though it's reportedly planned for Firefox 151.\n\n## Patches\n\nThe issue was fixed as of Anki 25.09.3\n\n### References\n\nhttps://x.com/taviso/status/2051310678800253318","status":"published","published":"2026-06-19T22:10:57Z","modified":"2026-07-15T21:58:59Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-22","CWE-346"],"updated_at":"2026-11-02T14:40:43.958448Z"}],"nvd":[{"id":"CVE-2026-59153","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"published","published":"2026-07-07T22:16:54.363Z","modified":"2026-10-25T20:10:00.147Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:12:28.040501Z"}],"osv":[{"id":"CVE-2026-59153","title":"Anki's local HTTP server does not sufficiently validate requests","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"published","published":"2026-07-07T21:11:01.808Z","modified":"2026-10-28T02:30:23.292513782Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"DEBIAN-CVE-2026-59153","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"withdrawn","published":"2026-07-07T22:16:54.363Z","modified":"2026-07-11T02:00:41.391299647Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"GHSA-869j-r97x-hx2g","title":"Anki's local HTTP server does not sufficiently validate requests","description":"## Summary\n\nAnki launches a local HTTP server to serve media files and web pages for parts of its interface. While the server has a CORS setup, requests from other origins were not blocked, allowing malicious websites to potentially trigger side-effecting requests.\n\n## Browser impact\n\nThe severity varies by browser because of Private Network Access (PNA), a newer spec that restricts web pages from making requests to localhost/local network addresses:\n\nChrome/Chromium (including Edge, Brave): Largely protected, as Chrome has implemented PNA restrictions for several years and now puts local network access behind a permission prompt.\nSafari: Hasn't implemented PNA yet, though macOS has some OS-level protections.\nFirefox: Most vulnerable — hasn't implemented PNA yet, though it's reportedly planned for Firefox 151.\n\n## Patches\n\nThe issue was fixed as of Anki 25.09.3\n\n### References\n\nhttps://x.com/taviso/status/2051310678800253318","status":"published","published":"2026-06-19T22:10:57Z","modified":"2026-07-23T15:11:19.535740707Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-22","CWE-346"],"updated_at":"2026-11-02T15:46:42.077781Z"},{"id":"PYSEC-2026-3459","title":"Anki's local HTTP server does not sufficiently validate requests","description":"## Summary\n\nAnki launches a local HTTP server to serve media files and web pages for parts of its interface. While the server has a CORS setup, requests from other origins were not blocked, allowing malicious websites to potentially trigger side-effecting requests.\n\n## Browser impact\n\nThe severity varies by browser because of Private Network Access (PNA), a newer spec that restricts web pages from making requests to localhost/local network addresses:\n\nChrome/Chromium (including Edge, Brave): Largely protected, as Chrome has implemented PNA restrictions for several years and now puts local network access behind a permission prompt.\nSafari: Hasn't implemented PNA yet, though macOS has some OS-level protections.\nFirefox: Most vulnerable — hasn't implemented PNA yet, though it's reportedly planned for Firefox 151.\n\n## Patches\n\nThe issue was fixed as of Anki 25.09.3\n\n### References\n\nhttps://x.com/taviso/status/2051310678800253318","status":"published","published":"2026-07-23T11:41:44.710117Z","modified":"2026-07-23T15:00:10.895986265Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T15:52:56.847083Z"},{"id":"UBUNTU-CVE-2026-59153","description":"Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.","status":"published","published":"2026-07-07T22:16:00Z","modified":"2026-07-09T17:17:14.401701606Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T16:56:41.911783Z"}]}}