CVE-2026-35516 LinkAce has SSRF via CheckLinksCommand - Link URL Update Bypasses laravel-html-meta Protection

Medium 5.0 Published 7 Apr 2026 Updated 9 Apr 2026

Authenticated users can exploit SSRF in LinkAce to access internal services and cloud metadata by bypassing IP restrictions during link updates.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-35516?

CVE-2026-35516 is a medium-severity server-side request forgery vulnerability in Kovah LinkAce, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-918

Which versions are affected by CVE-2026-35516?

It affects 1 product.

Products include Linkace Linkace.

How do I fix CVE-2026-35516?

No fix has been published for CVE-2026-35516 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-35516 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35516 exists.

Sources

Also known as GHSA-4jhm-r4f5-p7xm.