{"id":"CVE-2021-46900","aliases":["DEBIAN-CVE-2021-46900","EUVD-2021-33548","GHSA-qvwx-3j2c-25v2","UBUNTU-CVE-2021-46900"],"status":"published","title":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not...","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00369,"percentile":0.31231,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-327"],"published":"2023-12-31T00:00:00Z","modified":"2026-10-23T18:04:01Z","fixes":[{"ecosystem":"Debian:12","package":"sympa","fixed_in":["6.2.66~dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"sympa","fixed_in":["6.2.66~dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"sympa","fixed_in":["6.2.66~dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.66~dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.66~dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.66~dfsg-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.24~dfsg-1","6.1.24~dfsg-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.18~dfsg-1","6.2.22~dfsg-1","6.2.24~dfsg-1","6.2.24~dfsg-1ubuntu0.1~esm1","6.2.24~dfsg-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"sympa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.40~dfsg-1","6.2.40~dfsg-3","6.2.40~dfsg-4","6.2.40~dfsg-4ubuntu0.20.04.1~esm1","6.2.40~dfsg-4ubuntu0.20.04.1~esm2"]}],"products":[{"vendor":"sympa","product":"sympa"}],"references":[{"url":"https://www.sympa.community/security/2021-001.html","tags":["x_transferred","Mitigation","Vendor Advisory","advisory","report"]},{"url":"https://github.com/sympa-community/sympa-community.github.io/blob/master/security/2021-001.md","tags":["x_transferred","Mitigation","Vendor Advisory","advisory","report"]},{"url":"https://github.com/sympa-community/sympa/issues/1091","tags":["x_transferred","Issue Tracking","Mitigation","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46900"},{"url":"https://github.com/advisories/GHSA-qvwx-3j2c-25v2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-46900","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-46900","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-46900","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-46900","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T00:00:00Z","modified":"2025-04-17T19:53:17.72Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:33:03.320536Z"}],"euvd":[{"id":"EUVD-2021-33548","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T00:00:00Z","modified":"2025-04-17T19:53:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T20:52:20.597725Z"}],"ghsa":[{"id":"GHSA-qvwx-3j2c-25v2","title":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not...","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T06:30:34Z","modified":"2024-01-19T05:05:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:55:26.812198Z"}],"nvd":[{"id":"CVE-2021-46900","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T05:15:08.04Z","modified":"2026-06-17T04:15:47.28Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:07:07.764332Z"}],"osv":[{"id":"CVE-2021-46900","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T05:15:08.04Z","modified":"2026-10-20T10:55:11.36340072Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:22.18434Z"},{"id":"DEBIAN-CVE-2021-46900","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T05:15:08.04Z","modified":"2026-10-23T18:04:01.012894669Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:35.799676Z"},{"id":"UBUNTU-CVE-2021-46900","description":"Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.","status":"published","published":"2023-12-31T05:15:00Z","modified":"2026-07-15T19:45:13.033877762Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:30.277322Z"}]}}