vulnti.work

Vikunja versions before 2.6.0 fail to properly validate link-share tokens in the v2 API user search endpoints. Attackers with a read-only share link can enumerate project users via the projects endpo…

Medium CVSS 4.3
CVECVE-2026-91981
First seen2026-09-21 22:15 UTC
Disclosed2026-09-15 16:17 UTC
Last updated2026-09-21 22:15 UTC
Channel statusauto

Summary

Vikunja versions before 2.6.0 fail to properly validate link-share tokens in the v2 API user search endpoints. Attackers with a read-only share link can enumerate project users via the projects endpoint and confirm arbitrary usernames exist via the global search endpoint.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD