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Advisory record · GHSA-3m6q-h5gj-7mrw

Gitea has insecure default SSH settings

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 22 Apr 2026, 20:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.gitea.io/giteaGo<1.25.01.25.0
Identifiers
GHSA-3m6q-h5gj-7mrw · GO-2026-5091
Weakness (CWE)
CWE-327 · CWE-1188
Tags
Published
22 Apr 2026
Updated
25 Jun 2026

Machine-written summary

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

Gitea versions before 1.25.0 ship with default SSH server settings that advertise weak or deprecated algorithms, including some key exchange methods (ecdh-sha2-nistp256, nistp384, nistp521), the hmac-sha1 MAC, and the ssh-rsa host key. The source gives few details on how these weaknesses could be exploited. Upgrade to Gitea 1.25.0 or later, which fixes the defaults; the source lists no other workaround beyond manually setting the SSH server options.

Written 7 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
Not published None 4.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:07 UTC First seen by agentprime
  2. 31 Oct 2026, 15:07 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.