Gogs: Cross-repository LFS object overwrite via missing content hash verification

published 2026-03-05 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9850 , GHSA-cj4v-437j-jq4c , GO-2026-4616

cvss: 9.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

Gogs is an open source self-hosted Git service. Prior to version 0.14.2, overwritable LFS object across different repos leads to supply-chain attack, all LFS objects are vulnerable to be maliciously overwritten by malicious attackers. This issue has been patched in version 0.14.2.

Patch / fix

fixed in 2 distros 2 links 3

go gogs.io/gogs 0.14.2
gogs gogs 0.14.2

suse opensuse

govulncheck-vulndb openSUSE Leap 15.6 0.0.20260317T205859-150000.1.152.1

suse advisories SUSE-SU-2026:1042-1

govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

github.com/gogs/gogs@81ee883 commit
github.com/gogs/gogs#8166 pull request
github.com/gogs/gogs/releases/tag/v0.14.2 release

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-03-06)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/gogs/gogs/security/advisories/GHSA-cj4v-437j-jq4c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L
GitHub	3.1	9.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L

Affected packages

ecosystem	package	affected	fixed in
go	gogs.io/gogs	<0.14.2 all versions	0.14.2

Affected products

gogs gogs

Classification

Weakness

CWE-345 Insufficient Verification of Data Authenticity

References

github.com /gogs/gogs/pull/8166
web, issue-tracking
github.com /gogs/gogs/commit/81ee8836445ac888d99da8b652be7d5cbc5c4d5c
web, patch
github.com /gogs/gogs/security/advisories/GHSA-cj4v-437j-jq4c
web, exploit, mitigation, vendor-advisory, advisory
github.com /gogs/gogs/releases/tag/v0.14.2
web, release-notes
nvd.nist.gov /vuln/detail/CVE-2026-25921
advisory
github.com /gogs/gogs
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary