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CVE-2026-58443 is a critical incorrect authorization vulnerability in Gitea affecting releases up to and including 1.26.4. The flaw resides in the pull request update API endpoint used to update pull requests. Gitea validates a public-only repository access token against the public base repository identified in the request route, but fails to re-apply the token’s public-only restriction when the operation reaches the private pull request head repository. Authorization for the private head repository then falls back to the associated user account’s normal repository permissions. Under these conditions, a token intended to be limited to public repositories can indirectly cause server-side merge or rebase operations that write commits into a private branch. If Gitea Actions is enabled on the affected private repository, the unauthorized push can also trigger private push-based workflows.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical incorrect authorization vulnerability in Gitea that allows a public-only repository access token with write scope to indirectly write to private pull request head branches via the pull request update API, potentially triggering private Actions workflows.
A critical access control vulnerability in Gitea that allows a public-only token to push commits into a private repository under certain pull request and permission conditions.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.