GHSA-gmwr-9j4p-96vm

Suggest an improvement
Source
https://github.com/advisories/GHSA-gmwr-9j4p-96vm
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-gmwr-9j4p-96vm/GHSA-gmwr-9j4p-96vm.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-gmwr-9j4p-96vm
Aliases
Published
2026-04-16T00:54:04Z
Modified
2026-04-16T22:56:28Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
  • 6.1 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
ProcessWire: server-side request forgery vulnerability in the admin panel's 'Add Module From URL' feature
Details

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-918"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-04-16T22:28:24Z",
    "nvd_published_at":  "2026-04-15T22:17:22Z",
    "severity":  "MODERATE"
}
References

Affected packages

Packagist / processwire/processwire

Package

Name
processwire/processwire
Purl
pkg:composer/processwire/processwire

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
3.0.255

Affected versions

3.*
3.0.34
3.0.35
3.0.36
3.0.39
3.0.41
3.0.42
3.0.61
3.0.62
3.0.96
3.0.98
3.0.123
3.0.148
3.0.164
3.0.165
3.0.184
3.0.200
3.0.210
3.0.226
3.0.227
3.0.244
3.0.246
3.0.255

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-gmwr-9j4p-96vm/GHSA-gmwr-9j4p-96vm.json"