{"affected":[{"defaultStatus":"unaffected","product":"meta.sr.ht","source":"CNA: VulnCheck","vendor":"SourceHut","versions":[{"lessThan":"0.89.0","status":"affected","version":"0.56.11","versionType":"semver"}]}],"cveId":"CVE-2026-121728","cwes":["CWE-862"],"description":"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 POST credentials to /register/step2, which invokes the unchecked GraphQL RegisterAccount mutation to create accounts.","epss":null,"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/"}],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},{"score":6.9,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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","version":"4.0"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}],"modifiedAt":1793747856217,"publishedAt":1793746534601,"references":[{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/1ea24685a76f6456245d0bc7fe6accf6231c4044"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/tree/0.88.9/item/metasrht/blueprints/auth.py#L121"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/refs/0.89.0"},{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/1ea24685a76f6456245d0bc7fe6accf6231c4044"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/refs/0.89.0"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/tree/0.88.9/item/metasrht/blueprints/auth.py#L121"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5"}],"revision":"cac0ae8305fc8611ee3bee129f670f2c8b3cf0998a29dde7a3441b387dff5e59","sources":[{"modifiedAt":1793746534601,"name":"CNA: VulnCheck","retrievedAt":1793748230520,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121728"},{"modifiedAt":1793747856217,"name":"NVD","retrievedAt":1793751780763,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121728"}],"ssvc":null,"status":"published","title":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2","updatedAt":1793751780763}