Security Advisory

CVE-2026-91981

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-15 15:18:25

Last updated 2026-09-15 15:18:25

Assigner VulnCheck

CVSS score 5.3

State PUBLISHED

Description

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.

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