Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck

CVE-2026-119545Forgejo through 15.0.11, 16.0.7, and 17.0.1 SSRF via OpenID Discovery

Medium 5.3

In plain English

A medium-severity server-side request forgery in forgejo from forgejo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 60.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Forgejo through 15.0.11, 16.0.0 through 16.0.7, and 17.0.0 through 17.0.1 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server issue requests by submitting arbitrary OpenID identifier URLs. Attackers can POST crafted identifiers to /user/login/openid to trigger blind discovery GET requests to loopback, cloud metadata, and internal addresses for port scanning and probing.

Affected products (as reported)

Vendor	Product	Versions
forgejo	forgejo	0 – through 15.0.1116.0.0 – through 16.0.717.0.0 – through 17.0.1

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

https://codeberg.org/forgejo/forgejo/src/tag/v17.0.1/modules/auth/openid/openid.go#L35-L36 technical-description
https://abraxaslabs.tech/research/forgejo-openid-discovery-ssrf third-party-advisory
GitHub Security Advisory (GHSA-2fcr-jfvc-vgg2) related, vendor-advisory
https://codeberg.org/forgejo/forgejo product
VulnCheck Advisory: Forgejo through 15.0.11, 16.0.7, and 17.0.1 SSRF via OpenID Discovery third-party-advisory