Gitea external renderer argument injection and code execution
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.
CVE-2026-73539
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-73539
Gitea
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Gitea",
"product": "Gitea",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.27.1"
}
],
"packageName": "gitea",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-73539
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34730 · Revision 1
- Added to Heist Feed
- Publisher date