TI-2021-11462 Aliases CVE-2021-31274 GHSA-2r2w-jrh2-p4gr

In LibreNMS < 21.3.0, a stored XSS vulnerability was identified in the API Access page…

LOW 26CWE-79Published 2021-09-08 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

In LibreNMS < 21.3.0, a stored XSS vulnerability was identified in the API Access page due to insufficient sanitization of the $api->description variable. As a result, arbitrary Javascript code can get executed.

Why it matters now

EPSS 0.00778 56th percentileScored 2026-11-07

Fix Fixed librenms/librenms (Packagist): 21.3.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	librenms/librenms (Packagist)	before 21.3.0	21.3.0	Patch available	GHSA-2r2w-jrh2-p4gr

— Vendor— Affected all versions Fixed in — No fix listed CNA
librenms/librenms (Packagist) Vendor— Affected before 21.3.0 Fixed in 21.3.0 Patch available GHSA-2r2w-jrh2-p4gr

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:librenms:librenms::::::::	before 21.3.0	Vulnerable	librenms

cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* Versions before 21.3.0 Vulnerable ·librenms

Remediation

Fix · GHSA-2r2w-jrh2-p4gr librenms/librenms (Packagist) Fixed in 21.3.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-31274
2026-10-03 Alias added: GHSA-2r2w-jrh2-p4gr

References

Patch 1

https://github.com/librenms/librenms/pull/12739

Advisory 3

TI-2018-14479 LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the… CVSS 3.0CRITICAL 9.8
TI-2026-59134 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion CVSS 4.0CRITICAL 9.2
TI-2022-03735 Insufficient Session Expiration in librenms/librenms CVSS 3.1CRITICAL 9.8
TI-2022-03252 Deserialization of Untrusted Data in librenms/librenms CVSS 3.1HIGH 8.8
TI-2026-05445 OS command injection in librenms CVSS 4.0HIGH 8.5
TI-2024-34235 LibreNMS before 24.10.0 allows a remote attacker to execute arbitrary code via OS command… CVSS 3.1CRITICAL 9.1

See all 105 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences