SSRF in Escriptorium

CVE-2026-18359

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

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.002 (12.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18359?
CVE-2026-18359 is a high-severity vulnerability in Escriptorium, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2026-08-06.
How severe is CVE-2026-18359?
High severity. CVSS v3 base score is 8.5 out of 10.