CVE-2026-73539
CVE-2026-73539 · Gitea external renderer argument injection and code execution
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Gitea substitutes a URL derived from the markup Context field into external renderer command templates without escaping the reference path before shell-style argument splitting. A crafted Context can inject additional renderer arguments, including options that load executable filter files. On deployments using a susceptible external renderer such as pandoc, a user who can place a filter file at an accessible path can cause it to execute as the Gitea service account; the public repository markup endpoint itself can be reachable without authentication.
CVSS 7.5 · High · EPSS 0.5%
- Published
- Updated
Affected products and versions
gitea
- Versions
- ≥ 0, ≤ 1.27.1: Affected (semver)
No fix published
Original sources
- https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2
- https://blog.gitea.com/release-of-1.27.2/
- https://github.com/go-gitea/gitea/pull/38885
- https://github.com/go-gitea/gitea/pull/38898
- https://github.com/go-gitea/gitea/releases/tag/v1.27.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-73539