CVE-2026-33954: LinkAce discloses private notesto unauthorized authenticated users via the web link detail page

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-27 · updated 2026-10-26
Weakness: CWE-285

Description

LinkAce is a self-hosted archive to collect website links. In versions prior to 2.5.3, a private note attached to a non-private link can be disclosed to a different authenticated user via the web interface. The API appears to correctly enforce note visibility, but the web link detail page renders notes without applying equivalent visibility filtering. As a result, an authenticated user who is allowed to view another user's `internal` or `public` link can read that user's `private` notes attached to the link. Version 2.5.3 patches the issue.

Affected products

Kovah LinkAce: before 2.5.3 — fixed in 2.5.3

How to fix

Upgrade to a fixed version: Kovah LinkAce 2.5.3. Check the vendor advisory for mitigations.

References

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