CVE-2026-40500
ProcessWire CMS SSRF via Add Module From URL
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.1EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
15 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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 parameter, causing the server to issue outbound HTTP requests to attacker-controlled internal or external hosts. Attackers can exploit differentiable error messages returned by the server to perform reliable internal network port scanning, host enumeration across RFC-1918 ranges, and potential access to cloud instance metadata endpoints.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Affected products
processwire · processwirepublic PoCs found — 1
cve_referencegist.github.com/thepiyushkumarshukla/7514e5eed526fd9d20fcfc42ce8d0a82unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.