CVE-2026-82556 Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgery
Remote attackers can exploit a server-side request forgery vulnerability in Forgejo's repository migration handler to access internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82556?
CVE-2026-82556 is a medium-severity server-side request forgery vulnerability in Forgejo, published on 30 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Forgejo up to 15.0.4. This issue affects the function net.LookupIP of the file services/migrations/allowlist/is_migrate_allowed.go of the component Repository Migration Handler. Performing a manipulation results in server-side request forgery. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named b313bb83f5ff22bcc0378e0e0ca7bbd58303f168. It is recommended to apply a patch to fix this issue. The project maintainer explains: "I don't intend to backport this to v15 or v16 as it is a breaking change."
Weakness: CWE-918
Which versions are affected by CVE-2026-82556?
How do I fix CVE-2026-82556?
No fix has been published for CVE-2026-82556 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-82556 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82556 exists.
Sources
Also known as GHSA-qcr2-8wjw-w786.