{"id":"CVE-2026-121728","title":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2","summary":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass vulnerability that allows unauthenticated attackers to register accounts when public registration is disabled. Attackers can obtain a CSRF token from /login and …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"SourceHut","product":"meta.sr.ht","affected":["meta.sr.ht >= 0.56.11 < 0.89.0"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T22:55:34.601Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121728","references":[{"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5"},{"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/1ea24685a76f6456245d0bc7fe6accf6231c4044"},{"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/tree/0.88.9/item/metasrht/blueprints/auth.py#L121"},{"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/refs/0.89.0","label":"meta.sr.ht 0.89.0 Release Notes"},{"url":"https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/"},{"url":"https://www.vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2","label":"VulnCheck Advisory: SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2"}],"tags":["cve.org"],"epss":0.0026,"epssPercentile":0.17867,"ingestedAt":"2026-11-05T20:33:06.608Z","slug":"CVE-2026-121728","body":"## Overview\n\nSourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass vulnerability that allows unauthenticated attackers to register accounts when public registration is disabled. Attackers can obtain a CSRF token from /login and POST credentials to /register/step2, which invokes the unchecked GraphQL RegisterAccount mutation to create accounts.\n\n## Affected\n\n- `meta.sr.ht >= 0.56.11 < 0.89.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}