CVE-2026-18359 Server-Side Request Forgery (SSRF) in eScriptorium

High 8.5 Published 6 Aug 2026 Updated 6 Aug 2026

Authenticated users can exploit SSRF in eScriptorium to access internal services and cloud metadata due to permissive default domain settings.

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-2026-18359?

CVE-2026-18359 is a high-severity server-side request forgery vulnerability in Scripta eScriptorium, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Server-side request forgery in the METS and IIIF import URI handling in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to make the server issue arbitrary HTTP requests to internal hosts, including the cloud instance metadata service, via the mets_uri or iiif_uri parameter of POST /api/documents/{pk}/imports/, because the IMPORT_ALLOWED_DOMAINS setting defaults to '*' and no address filtering, redirect cap or timeout is applied

Weakness: CWE-918

Which versions are affected by CVE-2026-18359?

It affects 1 product.

Products include Escriptorium Escriptorium.

How do I fix CVE-2026-18359?

No fix has been published for CVE-2026-18359 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-2026-18359 being exploited?

There is no known exploitation of CVE-2026-18359 in the wild and no public exploit code.

Sources

Also known as GHSA-cpqx-fhwg-cr7g.