CVE-2026-58416
Description
A flaw was found in Gitea. The Fork-PR Actions task, which handles pull requests from forked repositories, can be exploited to read data from a third private repository. This occurs due to a missing guard that should prevent unauthorized access via the collaborative-owner branch. A remote attacker could leverage this vulnerability to gain unauthorized access to sensitive information.
Statement
A flaw was found in Gitea's Actions continuous integration runner logic for pull requests from forked repositories. Due to a missing permission boundary check on collaborative-owner branches, a Gitea Actions workflow triggered by a fork pull request can access unauthorized repository contexts. An authenticated remote user with write access to a fork can exploit this vulnerability to read sensitive data and configuration secrets from a third private repository accessible to the collaborative owner.
Mitigation
To mitigate this issue, repository administrators should disable Gitea Actions on affected repositories or restrict pull request workflows from fork repositories by configuring `RUN_WORKFLOWS_FROM_FORK_PULL_REQUESTS` to `false` in the Gitea configuration.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 7.1 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | High |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Changed |
| Confidentiality | High | N/A | High |
| Integrity Impact | None | N/A | Low |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability,Access Control
Technical Impact: Modify Memory; Read Memory; Execute Unauthorized Code or Commands; Gain Privileges or Assume Identity; Bypass Protection Mechanism; Other
Frequently Asked Questions
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