CVE-2026-52804
MEDIUMGogs: Privilege Escalation via Collaboration Access Mode Validation
Title source: cnaDescription
Gogs is an open source self-hosted Git service. Prior to 0.14.3, a repository admin collaborator can escalate their privileges to owner-level access by exploiting an off-by-one error in the ChangeCollaborationAccessMode function. This vulnerability is fixed in 0.14.3.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/gogs/gogs/security/advisories/GHSA-4565-r4x7-hg8j
X_Refsource_Misc x_refsource_misc
https://github.com/gogs/gogs/pull/8227
X_Refsource_Misc x_refsource_misc
https://github.com/gogs/gogs/commit/1fdc9cc28e159135cfa4d6b11ecd5daa0f8ce22b
X_Refsource_Misc x_refsource_misc
https://github.com/gogs/gogs/releases/tag/v0.14.3
Scores
CVSS v4
5.5
EPSS
0.0050
EPSS Percentile
39.0%
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-193
Status
published
Products (1)
gogs/gogs
< 0.14.3
Published
Jun 24, 2026
Tracked Since
Jun 25, 2026