CVE-2026-40500 (GCVE-0-2026-40500)

Vulnerability from cvelistv5 – Published: 2026-04-15 21:25 – Updated: 2026-04-15 21:25
VLAI?
Title
ProcessWire CMS SSRF via Add Module From URL
Summary
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.
Severity ?
6.1 (Medium)
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
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
processwire processwire Affected: 0 , ≤ 3.0.255 (semver)
Create a notification for this product.
Credits
Piyush Kumar Shukla
Show details on NVD website
To clipboard 

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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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    "dateReserved": "2026-04-13T20:29:02.808Z",
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    "state": "PUBLISHED"
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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