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OpenAdvisories
High · 8.5 CVE-2026-33953 EUVD-2026-16868

LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce

Published Mar 27, 2026 · Updated Mar 30, 2026 · Assigned by GitHub_M

Description

LinkAce is a self-hosted archive to collect website links. Versions prior to 2.5.3 block direct requests to private IP literals, but still performs server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.

Affected products

VendorProductAffectedFixed
Kovah LinkAce < 2.5.3 —

References