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Advisory record · GHSA-cpj3-3r2f-xj59

OpenBao has Reflected XSS in its OIDC authentication error message

CVSS 9.4 CriticalCriticalEPSS 0.0030 · 22nd percentile

Critical, because:

  • CVSS score 9.4: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 26 Mar 2026, 18:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/openbao/openbaoGo<0.0.0-20260325133417-6e2b2dd84f0e0.0.0-20260325133417-6e2b2dd84f0e
Identifiers
GHSA-cpj3-3r2f-xj59 · BIT-openbao-2026-33758 · CVE-2026-33758 · GO-2026-4862
Weakness (CWE)
CWE-20 · CWE-79 · CWE-80 · CWE-116
Tags
Published
26 Mar 2026
Updated
27 Jul 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
9.4 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0030, the 22nd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:56 UTC First seen by agentprime
  2. 31 Oct 2026, 14:56 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.