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.
Metrics
Affected Vendors & Products
References
History
Wed, 15 Apr 2026 22:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Processwire
Processwire processwire |
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| Vendors & Products |
Processwire
Processwire processwire |
Wed, 15 Apr 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | ProcessWire CMS SSRF via Add Module From URL | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-04-15T21:25:53.214Z
Reserved: 2026-04-13T20:29:02.808Z
Link: CVE-2026-40500
No data.
Status : Received
Published: 2026-04-15T22:17:22.377
Modified: 2026-04-15T22:17:22.377
Link: CVE-2026-40500
No data.
OpenCVE Enrichment
Updated: 2026-04-15T22:30:15Z