CVE-2026-27657 Gitea email settings allow changing another user's primary email address
An attacker can modify another user's primary email address, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-27657?
CVE-2026-27657 is a high-severity missing authorization vulnerability in Gitea Open Source Git Server, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Gitea versions before 1.25.5 allow a user to change another user's primary email address.
Weakness: CWE-639
Which versions are affected by CVE-2026-27657?
3 open source packages ship an affected version, including code.gitea.io/gitea.
| Package | Affected | Fixed in |
|---|---|---|
code.gitea.io/gitea Go | All versions | 1.25.5 |
code.gitea.io/gitea Go | All versions | 1.25.5 |
code.gitea.io/gitea Go | All versions | 1.25.5 |
How do I fix CVE-2026-27657?
Upgrade code.gitea.io/gitea to 1.25.5 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-27657 being exploited?
There is no known exploitation of CVE-2026-27657 in the wild and no public exploit code.
Sources
Also known as GHSA-4c8f-3m6h-m56r, GO-2026-6335.