LinkAce is a self-hosted archive to collect website links. Prior to 2.5.4, LinkRepository::update and CheckLinksCommand::checkLink do not check for private IPs. An authenticated user can read responses from internal services (AWS IMDSv1, cloud metadata, internal APIs) by creating a link with a public URL and then updating it to a private IP. The links:check cron job makes the request server-side without IP filtering. This can expose cloud credentials, internal service data, and network topology. This vulnerability is fixed in 2.5.4.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/Kovah/LinkAce/security/advisories/GHSA-4jhm-r4f5-p7xm Exploit, Mitigation, Vendor Advisory
- https://github.com/Kovah/LinkAce/security/advisories/GHSA-4jhm-r4f5-p7xm Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.0 · linkaceNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:linkace:linkace:*:*:*:*:*:*:*:*
References 2
- https://github.com/Kovah/LinkAce/security/advisories/GHSA-4jhm-r4f5-p7xm Exploit, Mitigation, Vendor Advisory
- https://github.com/Kovah/LinkAce/security/advisories/GHSA-4jhm-r4f5-p7xm Exploit, Mitigation, Vendor Advisory