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Advisory record · GHSA-263q-5cv3-xq9g

Gitea allows attackers to add attachments with forbidden file extensions

CVSS 8.2 HighEPSS 0.0033 · 26th percentile

Published by the GitHub Advisory Database at 26 Dec 2025, 03:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.gitea.io/giteaGo<1.23.0-rc01.23.0-rc0
Identifiers
GHSA-263q-5cv3-xq9g · BIT-gitea-2025-68939 · CVE-2025-68939 · GO-2025-4261
Weakness (CWE)
CWE-424
Tags
Published
26 Dec 2025
Updated
3 Nov 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Gitea (code.gitea.io/gitea) versions before 1.23.0 are affected. An attacker who can edit an attachment through the attachment API can give it a file extension that is normally forbidden. No fixed version is listed in the source, so the advisory gives no upgrade target; the source gives few other details.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.2 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L CNA (mitre)
  • CISA KEV Not listed.
  • EPSS 0.0033, the 26th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 26 Dec 2025, 03:30 UTC Confirmed by GitHub Advisory Database
  2. 31 Oct 2026, 14:14 UTC First seen by agentprime
  3. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.