Advisory record · GHSA-jj45-xvq5-rhh9

Kratos has a Confused Deputy issue

CVSS 6.9 MediumEPSS 0.0032 · 24th percentile

Published by the GitHub Advisory Database at 25 Apr 2026, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/go-kratos/kratos/v2Go<=2.9.2No fixed version yet
Identifiers
GHSA-jj45-xvq5-rhh9 · CVE-2026-6993 · GO-2026-5471
Weakness (CWE)
CWE-441
Published
25 Apr 2026
Updated
24 Jul 2026

Machine-written summary

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

The github.com/go-kratos/kratos/v2 package, versions up to and including 2.9.2, has a confused deputy flaw in its HTTP server's fallback handling for http.DefaultServeMux. A remote attacker can cause the server to act as an unintended intermediary. The source gives few details on the exact impact. No fixed version is listed, so check the upstream project for a patched release.

Written 6 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
6.9 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CNA (VulDB)
  • CISA KEV Not listed.
  • EPSS 0.0032, the 24th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:57 UTC First seen by agentprime
  2. 31 Oct 2026, 14:57 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.