{"id":"CVE-2026-111933","title":"Coder before 2.34.2 User Enumeration via Login Placeholder Hash","summary":"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 s…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-203"],"vendor":"coder","product":"coder","affected":["coder >= 2.34.0 < 2.34.2","coder >= 2.33.0 < 2.33.8","coder >= 2.30.0 < 2.32.7","coder < 2.29.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-19T15:09:55.562810Z"},"published":"2026-10-17","updated":"2026-10-19","sourceUpdated":"2026-10-19T15:12:57.230Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111933","references":[{"url":"https://github.com/coder/coder/security/advisories/GHSA-8fxq-53rx-ph5f","label":"GitHub Security Advisory (GHSA-8fxq-53rx-ph5f)"},{"url":"https://www.vulncheck.com/advisories/coder-before-2.34.2-user-enumeration-via-login-placeholder-hash","label":"VulnCheck Advisory: Coder before 2.34.2 User Enumeration via Login Placeholder Hash"},{"url":"https://github.com/coder/coder/pull/26205"},{"url":"https://github.com/coder/coder/commit/35a7dc8ab9c7f15ce05d963947823ee31224512f"},{"url":"https://github.com/coder/coder"},{"url":"https://github.com/coder/coder/releases/tag/v2.29.17"},{"url":"https://github.com/coder/coder/releases/tag/v2.32.7"},{"url":"https://github.com/coder/coder/releases/tag/v2.33.8"},{"url":"https://github.com/coder/coder/releases/tag/v2.34.2"}],"tags":["cve.org","osv","go"],"epss":0.00225,"epssPercentile":0.13138,"aliases":["GHSA-8fxq-53rx-ph5f","GO-2026-6265"],"ecosystem":"go","patched":["github.com/coder/coder/v2 2.34.2","github.com/coder/coder/v2 2.33.8","github.com/coder/coder/v2 2.32.7","github.com/coder/coder/v2 2.29.17"],"ingestedAt":"2026-10-17T19:08:56.530Z","slug":"CVE-2026-111933","body":"## Overview\n\nCoder 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.\n\n## Affected\n\n- `coder >= 2.34.0 < 2.34.2`\n- `coder >= 2.33.0 < 2.33.8`\n- `coder >= 2.30.0 < 2.32.7`\n- `coder < 2.29.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-111933)\n\nAffected packages:\n\n- `github.com/coder/coder/v2 >= 2.34.0, < 2.34.2`\n- `github.com/coder/coder/v2 >= 2.33.0, < 2.33.8`\n- `github.com/coder/coder/v2 >= 2.30.0, < 2.32.7`\n- `github.com/coder/coder/v2 < 2.29.17`\n\nPatched in:\n\n- `github.com/coder/coder/v2 2.34.2`\n- `github.com/coder/coder/v2 2.33.8`\n- `github.com/coder/coder/v2 2.32.7`\n- `github.com/coder/coder/v2 2.29.17`\n\nSource: https://osv.dev/vulnerability/GHSA-8fxq-53rx-ph5f","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}