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Advisory record · GHSA-39p5-2wrr-xh29

Vikunja: Any user can enumerate every team and its members by attaching arbitrary teams to a throwaway project

CVSS 5.3 MediumEPSS 0.0031 · 23rd percentile

Published by the GitHub Advisory Database at 9 Oct 2026, 20:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.vikunja.io/apiGo<2.6.02.6.0
Identifiers
GHSA-39p5-2wrr-xh29 · CVE-2026-91980 · GO-2026-6713
Weakness (CWE)
CWE-200 · CWE-639
Tags
Published
9 Oct 2026
Updated
19 Oct 2026

Machine-written summary

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

Vikunja (Go module code.vikunja.io/api) versions before 2.6.0 are affected. Any logged-in user who is an admin of a project can attach any team on the instance to it, then list the project's teams and read each team's name, description, creator, and full member list, including usernames and display names, for teams they do not belong to. Upgrade to version 2.6.0 or later, which requires the caller to have access to a team before attaching it.

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
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0031, the 23rd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:11 UTC First seen by agentprime
  2. 31 Oct 2026, 14:11 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.