CVE-2026-121728
SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2
CVE-2026-121728 is a medium vulnerability (CVSS 6.9) in Sourcehut Meta.sr.ht, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.
- Severity
- 6.9 MediumCVSS 4.0, CVE List
- Exploit chance
- 0.26%EPSS, 17th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
Discussion
Affected products
What each source reports
CVE List Score used
SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2
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.
- Record
CVE-2026-121728- CVSS 4.0
- 6.9 Medium
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 - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-09
EUVDEUVD-2026-116586
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.
- Record
EUVD-2026-116586- CVSS 4.0
- 6.9 Medium
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 - Updated
- 2026-11-09
GitHub AdvisoriesGHSA-j8p6-f6h2-jc6f
SourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass vulnerability that...
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.
- Record
GHSA-j8p6-f6h2-jc6f- CVSS 4.0
- 6.9 Medium
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 - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-04
NVD
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.
- Record
CVE-2026-121728- CVSS 4.0
- 6.9 Medium
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 - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-09
OSV
SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2
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.
- Record
CVE-2026-121728- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-862
- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| published | CVE List, EUVD, OSV | |
| references | OSV | |
| published | EUVD, NVD | |
| aliases, published, references | EUVD, GitHub Advisories | |
| first indexed | CVE List |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5
blog.arusekk.pl/posts/srht-disabled-registration-bypass
vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2