{"id":"CVE-2021-40540","aliases":["DEBIAN-CVE-2021-40540","EUVD-2021-27715","GHSA-jr28-h3mc-x46r","UBUNTU-CVE-2021-40540","openSUSE-SU-2024:11481-1"],"status":"published","title":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a...","description":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info-\u003erequest NULL check for certain malformed HTTP requests.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.02628,"percentile":0.85714,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-09-07T01:50:51Z","modified":"2026-10-23T18:03:34Z","fixes":[{"ecosystem":"Debian:12","package":"ulfius","fixed_in":["2.7.1-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ulfius","fixed_in":["2.7.1-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ulfius","fixed_in":["2.7.1-2"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"ulfius","fixed_in":["2.7.4-1.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.1-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.1-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.1-2"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-1","2.1.2-1","2.2.4-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-4"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-1ubuntu3","2.7.6-1ubuntu1","2.7.7-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"ulfius","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.4-1.2"}]}]}],"products":[{"vendor":"ulfius_project","product":"ulfius"}],"references":[{"url":"https://github.com/babelouest/ulfius/commit/c83f564c184a27145e07c274b305cabe943bbfaa","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/babelouest/ulfius/compare/v2.7.3...v2.7.4","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://packetstormsecurity.com/files/164152/Ulfius-Web-Framework-Remote-Memory-Corruption.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40540"},{"url":"https://github.com/advisories/GHSA-jr28-h3mc-x46r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-40540","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-40540","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-40540","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2021-40540","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-40540","description":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info-\u003erequest NULL check for certain malformed HTTP requests.","status":"published","published":"2021-09-07T01:50:51Z","modified":"2024-08-04T02:44:10.842Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27715","description":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info-\u003erequest NULL check for certain malformed HTTP requests.","status":"published","published":"2021-09-07T01:50:51Z","modified":"2024-08-04T02:44:10Z","updated_at":"2026-11-03T03:24:20.264881Z"}],"ghsa":[{"id":"GHSA-jr28-h3mc-x46r","title":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a...","description":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info-\u003erequest NULL check for certain malformed HTTP 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requests.","status":"published","published":"2021-09-07T02:15:00Z","modified":"2026-04-22T13:00:35.75468Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"openSUSE-SU-2024:11481-1","title":"libulfius2_7-2.7.4-1.2 on GA media","description":"These are all security issues fixed in the libulfius2_7-2.7.4-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:13:13.113618Z","updated_at":"2026-11-02T16:58:35.195147Z"}]}}