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Advisory record · GHSA-j769-9gv9-65gr

Graylog token revocation endpoint allows authenticated users to delete other users’ access tokens

CVSS 5.3 MediumEPSS 0.0056 · 47th percentile

Published by the GitHub Advisory Database at 28 Aug 2026, 22:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.graylog2:graylog2-serverMaven>=6.2.0, <6.3.12 || >=7.0.0, <7.0.7 || >=7.1.0, <7.1.26.3.12, 7.0.7, 7.1.2
Identifiers
GHSA-j769-9gv9-65gr · CVE-2026-55867
Weakness (CWE)
CWE-639
Tags
Published
28 Aug 2026
Updated
28 Aug 2026

Machine-written summary

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

Graylog versions from 6.2.0 before 6.3.12, from 7.0.0 before 7.0.7, and from 7.1.0 before 7.1.2 are affected. An authenticated user who knows or can guess a valid token identifier can delete other users' access tokens, including service account and administrator tokens, though token contents are not exposed. Upgrade to Graylog 6.3.12, 7.0.7, 7.1.2 or later; no workaround is available.

Written 2 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
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0056, the 47th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 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.