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Advisory record · GHSA-88f6-4rjv-x774

Vikunja: TOTP secret is readable after enrollment, no step-up auth

CVSS 5.3 MediumEPSS 0.0035 · 28th percentile

Published by the GitHub Advisory Database at 9 Oct 2026, 20:51 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-88f6-4rjv-x774 · CVE-2026-91982 · GO-2026-6722
Weakness (CWE)
CWE-312 · CWE-522
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 (code.vikunja.io/api, versions before 2.6.0) returns the raw TOTP shared secret and provisioning URL to any caller holding a valid access token, even after TOTP is enabled, and without asking for the password. An attacker who obtains a victim's access token, for example through XSS or a stolen or unlocked session, can copy the secret into an authenticator app and generate valid second-factor codes. Upgrade to version 2.6.0 or later, which fixes the issue.

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 0.0035, the 28th percentile, on 5 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.