{"id":"CVE-2026-111933","summary":"Coder before 2.34.2 User Enumeration via Login Placeholder Hash","details":"Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a user enumeration vulnerability because userpassword.Compare() substitutes a placeholder hash derived from the string \"hunter2\" when a stored password hash is empty. Unauthenticated attackers can submit logins with the password \"hunter2\" and distinguish HTTP 403 from 401 responses to enumerate valid accounts and reveal the authentication provider of SSO-only users.","aliases":["GHSA-8fxq-53rx-ph5f","GO-2026-6265"],"modified":"2026-10-26T02:30:36.253877543Z","published":"2026-10-17T18:46:43.456Z","database_specific":{"cwe_ids":["CWE-203"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111933.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111933.json"},{"type":"ADVISORY","url":"https://github.com/coder/coder/security/advisories/GHSA-8fxq-53rx-ph5f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111933"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/coder-before-2.34.2-user-enumeration-via-login-placeholder-hash"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/coder/coder","events":[{"introduced":"3006da5ef7a9c27755aa5b2f3f5f05d2c8971a58"},{"fixed":"d7774e5c4ca222ee89a8b6aa82b61c1f8bb81d1f"},{"introduced":"f009c17217e6bad9a61ba511d23735bc1ce94da0"},{"fixed":"f9486be96df392b017941ff6a6bd43a629adc86c"},{"introduced":"43e67d12e278e13399cffc77f132e8e628339477"},{"fixed":"0374b00b63bc5043a507194f284ef298e0ea3b52"},{"introduced":"0"},{"fixed":"77253bfc55665027a374a5d2fb70f4ff74410326"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"2.34.0"},{"fixed":"2.34.2"}]},{"range":[{"introduced":"2.33.0"},{"fixed":"2.33.8"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"},{"range":[{"introduced":"2.30.0"},{"fixed":"2.32.7"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"},{"range":[{"introduced":"0"},{"fixed":"2.29.17"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["v2.29.16","v2.33.7","v2.34.1","v2.32.6","v2.32.5","v2.33.6","v2.34.0","v2.29.15","v2.32.4","v2.33.5","v2.32.3","v2.29.14","v2.33.4","v2.29.13","v2.32.2","v2.33.3","v2.29.12","v2.33.2","v2.32.1","v2.33.1","v2.33.0","v2.29.11","v2.29.10","v2.32.0","v2.33.0-rc.0","v2.29.9","v2.29.8","v2.32.0-rc.0","v2.29.7","v2.29.6","v2.29.5","v2.29.4","v2.29.3","v2.29.2","v2.29.1","v2.29.0","v2.10.0","v2.9.0","v2.6.0","v2.8.0","v2.7.1","v2.7.0","v2.5.1","v2.5.0","v2.4.0","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.2.1","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.0.2","v0.27.1","v0.27.0","v0.26.2","v0.26.1","v0.26.0","v0.25.0","v0.24.1","v0.24.0","v0.23.7","v0.23.6","v0.23.5","v0.23.4","v0.23.3","v0.23.2","v0.23.1","v0.23.0","v0.22.2","v0.22.1","v0.22.0","v0.21.3","v0.21.2","v0.21.1","v0.21.0","v0.20.1","v0.20.0","v0.19.2","v0.19.1","v0.19.0","v0.18.1","v0.18.0","v0.17.4","v0.17.3","v0.17.2","v0.17.1","v0.17.0","v0.16.0","v0.15.3","v0.15.2","v0.15.1","v0.15.0","v0.14.3","v0.14.2","v0.14.1","v0.14.0","v0.13.6","v0.13.5","v0.13.4","v0.13.3","v0.13.2","v0.13.1","v0.13.0","v0.12.9","v0.12.8","v0.12.7","v0.12.6","v0.12.5","v0.12.4","v0.12.3","v0.12.2","v0.12.1","v0.12.0","v0.11.0","v0.10.2","v0.10.1","v0.10.0","rm","v0.9.10","v0.9.9","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.15","v0.8.14","v0.8.13","v0.8.12","v0.8.11","v0.8.10","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.12","v0.7.11","v0.7.10","v0.7.9","v0.7.8","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.6","v0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.11","v0.5.10","v0.5.9","v0.5.8","v0.5.7","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.5","v0.3.4","v0.3.3","v0.3.2","v0.3.1","v0.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111933.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}