{"id":"CVE-2026-127131","aliases":["DEBIAN-CVE-2026-127131","EUVD-2026-124530","GHSA-g7q7-vjwj-gg76"],"status":"published","title":"SOGo before 5.12.13 Missing Rate Limiting on TOTP Verification","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","severity":{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2026-11-12T15:56:31Z","modified":"2026-11-13T02:45:56Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"sogo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.10.0-1","5.10.0-2","5.10.0-3","5.11.0-1","5.11.0-2","5.11.1-1","5.11.2-1","5.11.2-2","5.11.2-3","5.11.2-4","5.12.0-1","5.12.1-1","5.12.1-2","5.12.1-3","5.12.10-1","5.12.11-1","5.12.12-1","5.12.13-1","5.12.3-1","5.12.3-2","5.12.4-1","5.12.4-1.1","5.12.4-1.2","5.12.6-1","5.12.7-1","5.12.8-1","5.12.8-2","5.12.9-1","5.8.0-1","5.8.0-2+deb12u1","5.8.0-2+deb12u2","5.8.0-2+deb12u3","5.8.2-1","5.8.3-1","5.8.4-1","5.9.0-1","5.9.1-1"]},{"source":"osv","ecosystem":"Debian:13","package":"sogo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.12.1-3","5.12.1-3+deb13u1","5.12.1-3+deb13u2","5.12.1-3+deb13u3","5.12.10-1","5.12.11-1","5.12.12-1","5.12.13-1","5.12.3-1","5.12.3-2","5.12.4-1","5.12.4-1.1","5.12.4-1.2","5.12.6-1","5.12.7-1","5.12.8-1","5.12.8-2","5.12.9-1"]}],"products":[{"vendor":"alinto","product":"sogo"},{"vendor":"alinto sogo","product":"sogo"}],"references":[{"url":"https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.13","tags":["patch","release-notes","fix"]},{"url":"https://www.vulncheck.com/advisories/sogo-before-missing-rate-limiting-on-totp-verification","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127131","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-g7q7-vjwj-gg76"},{"url":"https://github.com/Alinto/sogo","tags":["package"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/127xxx/CVE-2026-127131.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-127131","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-127131","title":"SOGo before 5.12.13 Missing Rate Limiting on TOTP Verification","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T15:56:31.256Z","modified":"2026-11-12T15:56:31.256Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-12T16:44:55.999858Z"}],"euvd":[{"id":"EUVD-2026-124530","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T15:56:31Z","modified":"2026-11-12T15:56:31Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-12T20:34:59.417972Z"}],"ghsa":[{"id":"GHSA-g7q7-vjwj-gg76","title":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP...","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T18:31:46Z","modified":"2026-11-12T18:31:52Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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":"critical"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-307"],"updated_at":"2026-11-12T18:42:37.941061Z"}],"nvd":[{"id":"CVE-2026-127131","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T16:19:07.807Z","modified":"2026-11-12T16:19:07.98Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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":"critical","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-12T17:31:55.216531Z"}],"osv":[{"id":"CVE-2026-127131","title":"SOGo before 5.12.13 Missing Rate Limiting on TOTP Verification","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T15:56:31.256Z","modified":"2026-11-13T02:45:56.754599548Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-307"],"updated_at":"2026-11-13T02:57:32.2543Z"},{"id":"DEBIAN-CVE-2026-127131","description":"SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.","status":"published","published":"2026-11-12T16:19:07.807Z","modified":"2026-11-13T05:00:12.138898952Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-13T05:30:21.188714Z"}]}}