CVE-2026-25921 Gogs: Cross-repository LFS object overwrite via missing content hash verification
Attackers can overwrite LFS objects across repositories due to missing hash verification, enabling supply-chain attacks in Gogs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-25921?
CVE-2026-25921 is a critical vulnerability in gogs, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-345
Which versions are affected by CVE-2026-25921?
3 open source packages ship an affected version, including gogs.io/gogs. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gogs.io/gogs Go | All versions | None |
gogs.io/gogs Go | All versions | 0.14.2 |
gogs.io/gogs Go | All versions | 0.14.2 |
Products include Gogs Gogs.
How do I fix CVE-2026-25921?
Upgrade gogs.io/gogs to 0.14.2 or later.
Is CVE-2026-25921 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25921 exists.
Other vulnerabilities in gogs
Sources
Also known as GHSA-cj4v-437j-jq4c, GO-2026-4616.