Medium [CVE-2026-58416] Information disclosure via Fork-PR Actions task
This medium-severity Red Hat Linux advisory covers CVE-2026-58416 affecting OpenShift Pipelines.
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Summary
Fork-PR Actions task can read a third private repository via the collaborative-owner branch (missing fork-PR guard) A flaw was found in Gitea. 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. 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.
Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-1220.
Affected Red Hat products: OpenShift Pipelines. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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