What is CVE-2026-40500?

CVE-2026-40500 is a medium-severity vulnerability in Processwire, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-04-15.

How severe is CVE-2026-40500?

Medium severity. CVSS v3 base score is 6.8 out of 10.

SSRF in Processwire

CVE-2026-40500

ProcessWire CMS version 3.0.255 and prior contain a server-side request forgery vulnerability in the admin panel's 'Add Module From URL' feature that allows authenticated administrators to supply arbitrary URLs to the module download param…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

Affected products

Processwire — versions 0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-40500?: CVE-2026-40500 is a medium-severity vulnerability in Processwire, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-04-15.
How severe is CVE-2026-40500?: Medium severity. CVSS v3 base score is 6.8 out of 10.