GHSA-7gww-x7fh-jf9j

Suggest an improvement
Source
https://github.com/advisories/GHSA-7gww-x7fh-jf9j
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-7gww-x7fh-jf9j/GHSA-7gww-x7fh-jf9j.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-7gww-x7fh-jf9j
Aliases
Published
2026-08-18T21:17:23Z
Modified
2026-09-02T03:55:41Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
Summary
LibreNMS: SSRF-driven stored XSS via Oxidized API response fields in device showconfig page
Details

Summary

The Oxidized integration URL (oxidized.url) is admin-configurable. LibreNMS fetches device info and version history from that URL and renders JSON fields (name, ip, model, author, commit message) into HTML without htmlspecialchars(). An admin pointing the URL at an attacker-controlled server achieves persistent XSS affecting all users who view any device's showconfig tab.

CVSS

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N — 8.1 High

Details

// includes/html/pages/device/showconfig.inc.php:276-278
echo '<li ...><strong>Node:</strong> ' . $node_info['name'] . '</li>';
echo '<li ...><strong>IP:</strong> '   . $node_info['ip']   . '</li>';
echo '<li ...><strong>Model:</strong> '. $node_info['model'] . '</li>';
// lines 349, 353: author and commit message also unescaped

Attack chain

  1. Admin sets oxidized.url to http://attacker.example.com/.
  2. Attacker server returns {"name":"<img src=x onerror=alert(1)>","ip":"x","model":"x"}.
  3. Any user viewing any device showconfig tab triggers the XSS.

PoC

Mock Oxidized server confirmed in response:

[!!!] CONFIRMED — ...<strong>Node:</strong> <img src=x onerror="alert('SSRF-XSS-oxidized')">...

Fix

echo '<li ...><strong>Node:</strong> ' . htmlspecialchars($node_info['name'], ENT_QUOTES, 'UTF-8') . '</li>';

Apply to all fields from $node_info, $author, $msg.

Prerequisite

Admin session. Oxidized integration must be enabled.

Database specific 
{
    "cwe_ids":  [
        "CWE-79",
        "CWE-918"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-08-18T21:17:23Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

Packagist / librenms/librenms

Package

Name
librenms/librenms
Purl
pkg:composer/librenms/librenms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
26.7.0

Affected versions

1.*
1.19
1.20
1.20.1
1.21
1.22
1.22.01
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.30.01
1.31
1.31.01
1.31.02
1.31.03
1.32
1.32.01
1.33
1.33.01
1.34
1.35
1.36
1.36.01
1.37
1.38
1.39
1.40
1.41
1.42
1.42.01
1.43
1.44
1.45
1.46
1.47
1.48
1.48.1
1.49
1.50
1.50.1
1.51
1.52
1.53
1.53.1
1.54
1.55
1.56
1.57
1.58
1.58.1
1.59
1.60
1.61
1.62
1.62.1
1.62.2
1.63
1.64
1.64.1
1.65
1.65.1
1.66
1.67
1.68
1.69
1.70.0
1.70.1
21.*
21.1.0
21.2.0
21.3.0
21.4.0
21.5.0
21.5.1
21.6.0
21.7.0
21.8.0
21.9.0
21.9.1
21.10.0
21.10.1
21.10.2
21.11.0
21.12.0
21.12.1
22.*
22.1.0
22.2.0
22.2.1
22.2.2
22.3.0
22.4.0
22.4.1
22.5.0
22.6.0
22.7.0
22.8.0
22.9.0
22.10.0
22.11.0
22.12.0
23.*
23.1.0
23.1.1
23.2.0
23.4.0
23.4.1
23.5.0
23.6.0
23.7.0
23.8.0
23.8.1
23.8.2
23.9.0
23.9.1
23.10.0
23.11.0
24.*
24.1.0
24.2.0
24.3.0
24.4.0
24.4.1
24.5.0
24.6.0
24.7.0
24.8.0
24.8.1
24.9.0
24.9.1
24.10.0
24.10.1
24.11.0
24.12.0
25.*
25.1.0
25.2.0
25.3.0
25.4.0
25.5.0
25.6.0
25.7.0
25.8.0
25.9.0
25.9.1
25.10.0
25.11.0
25.12.0
26.*
26.1.0
26.1.1
26.2.0
26.3.0
26.3.1
26.4.0
26.4.1
26.5.0
26.5.1
26.6.0
26.6.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-7gww-x7fh-jf9j/GHSA-7gww-x7fh-jf9j.json"