CVE-2026-121728
SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | sourcehut |
| Product | meta.sr.ht |
| Published | Nov 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
SourceHut / meta.sr.ht
0.56.11 < 0.89.0
References
git.sr.ht: https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5 git.sr.ht: https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/1ea24685a76f6456245d0bc7fe6accf6231c4044 git.sr.ht: https://git.sr.ht/~sircmpwn/meta.sr.ht/tree/0.88.9/item/metasrht/blueprints/auth.py#L121 git.sr.ht: https://git.sr.ht/~sircmpwn/meta.sr.ht/refs/0.89.0 blog.arusekk.pl: https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/ vulncheck.com: https://www.vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2
Credits
Arkadiusz Kozdra