CVE-2021-43324

Cross-site Scripting in LibreNMS

6.1 MediumFix available

LibreNMS through 21.10.2 allows XSS via a widget title.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.65%Up 0.2 points since Nov 4, 2021

What each source reports

NVD Score used6.1

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: CVE-2021-43324
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE ListNo score

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: CVE-2021-43324
Updated: 2026-11-02

EUVDEUVD-2021-2292No score

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: EUVD-2021-2292
Updated: 2026-11-03

GitHub AdvisoriesGHSA-46rx-6jg9-4fh86.1

Cross-site Scripting in LibreNMS

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: GHSA-46rx-6jg9-4fh8
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV6.1

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: CVE-2021-43324
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-46rx-6jg9-4fh86.1

Cross-site Scripting in LibreNMS

LibreNMS through 21.10.2 allows XSS via a widget title.

Record: GHSA-46rx-6jg9-4fh8
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

librenms

Affected packages

Affected packages
Package	Affected	Fixed
`librenms/librenms` Packagist	through 21.10.2	21.11.0
`librenms/librenms` Packagist	before 21.11.0, plus listed versions 1.191.201.20.11.211.22 Show 45 moreShow less 1.22.011.231.241.251.261.271.281.291.301.30.011.311.31.011.31.021.31.031.321.32.011.331.33.011.341.351.361.36.011.371.381.391.401.411.421.42.011.431.441.451.461.471.481.48.11.491.501.50.11.511.521.531.53.11.541.55	21.11.0

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-43324 is a medium vulnerability (CVSS 6.1) in Librenms, published November 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. Fixed in librenms/librenms 21.11.0.

References

This page doesn't list everything

Left out here: 35 versions. The JSON record has them.