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Vulnerability details: VCID-bczm-p4wu-efdm
Vulnerability ID VCID-bczm-p4wu-efdm
Aliases CVE-2021-43324
GHSA-46rx-6jg9-4fh8
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') LibreNMS allows XSS via a widget title.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2021-43324
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2021-43324
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2021-43324
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2021-43324
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-46rx-6jg9-4fh8
cvssv3.1 6.1 https://github.com/librenms/librenms
generic_textual MODERATE https://github.com/librenms/librenms
cvssv3.1 6.1 https://github.com/librenms/librenms/commit/99d2462b80435b91a35236639b909eebee432126
generic_textual MODERATE https://github.com/librenms/librenms/commit/99d2462b80435b91a35236639b909eebee432126
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-43324
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-43324
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-43324
https://github.com/librenms/librenms
https://github.com/librenms/librenms/commit/99d2462b80435b91a35236639b909eebee432126
CVE-2021-43324 https://nvd.nist.gov/vuln/detail/CVE-2021-43324
GHSA-46rx-6jg9-4fh8 https://github.com/advisories/GHSA-46rx-6jg9-4fh8
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/librenms/librenms
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/librenms/librenms/commit/99d2462b80435b91a35236639b909eebee432126
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43324
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.00111
EPSS Score 3e-05
Published At June 8, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:40:20.516960+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/librenms/librenms/CVE-2021-43324.yml 38.6.0