Security Advisory

CVE-2026-91985

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-15 15:18:28

Last updated 2026-09-15 16:04:15

Assigner VulnCheck

CVSS score 8.7

State PUBLISHED

Description

Vikunja before 2.6.0 fails to properly restrict access to the link-share hash field in single-share read endpoints, allowing read-only members to obtain the share's secret credential. Attackers can exchange the disclosed hash for a link-share JWT at the share's permission level to escalate privileges and perform unauthorized writes or administrative actions.

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