PatchTheCVECVE-2026-96399: A repository's external issue tracker regular expression containing alternating capture groups could produce i
CVE-2026-96399 is a high-severity flaw (CVSS 7.5) affecting gitea. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings could make any later rendering of matching content, such as viewing a README, crash the instance for all users.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-96399?
gitea: upgrade to 28.0.0. Exact commands for each OS are on this page.
Is CVE-2026-96399 being exploited?
CVE-2026-96399 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-96399 affect?
CVE-2026-96399 affects gitea. Severity is high (CVSS 7.5). A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who c
How urgent is CVE-2026-96399?
Priority 38/100. High severity; Remotely exploitable, no login, no user action
Software pages
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