CVE-2026-110225 Shaarli through 0.16.9 SSRF via Thumbnail Retrieval update-thumbnail Route
Authenticated users can exploit Shaarli's thumbnail retrieval to force server-side requests to internal or cloud metadata addresses, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110225?
CVE-2026-110225 is a medium-severity server-side request forgery vulnerability in Shaarli, published on 13 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Shaarli through 0.16.9 contains a server-side request forgery vulnerability that allows authenticated users to make the server request internal addresses by fetching bookmark thumbnails without private-address checks. Attackers can create bookmarks pointing to loopback, private, or cloud metadata addresses and trigger ThumbnailsController::ajaxUpdate or saving to send blind GET requests, with open_shaarli exposing this to any visitor.
Weakness: CWE-918
Which versions are affected by CVE-2026-110225?
How do I fix CVE-2026-110225?
No fix has been published for CVE-2026-110225 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-2026-110225 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110225 exists.
Sources
Also known as DEBIAN-CVE-2026-110225, GHSA-w44p-6p6v-f82x, UBUNTU-CVE-2026-110225.