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CVE-2025-68614· NVD / CVE Program· CNA GitHub_M

LibreNMS Alert Rule API Cross-Site Scripting Vulnerability

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Prior to version 25.12.0, the Alert Rule API is vulnerable to stored cross-site scripting. Alert rules can be created or updated via LibreNMS API. The alert rule name is not properly sanitized, and can be used to inject HTML code. This issue has been patched in version 25.12.0.

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
Dec 22, 2025
Updated
Jun 17, 2026
EPSS
3.9% · 90th percentile
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Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.4
CNA · GitHub_M
4.3
1.1 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
librenmslibrenms

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • librenms librenmsbefore 25.12.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • librenms librenms

    • < 25.12.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistlibrenms/librenmsbefore 25.12.025.12.0

Same product

librenms: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-20434LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the $_POST['community'] parameter to html/pages/addhost.inc.
    60This week
  • CVE-2019-10669An issue was discovered in LibreNMS through 1.47.
    52Plan
  • CVE-2022-4067Cross-site Scripting (XSS) - Stored in librenms/librenms
    49Plan
  • CVE-2022-3562Cross-site Scripting (XSS) - Stored in librenms/librenms
    49Plan
  • CVE-2022-4069Cross-site Scripting (XSS) - Generic in librenms/librenms
    47Plan
  • CVE-2024-49754LibreNMS has a stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/api-access.inc.php
    43Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
librenms librenms25.12.0 · descriptionVendor (CNA)
Packagist:librenms/librenms25.12.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-49754402 days apartLibreNMS has a stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/api-access.inc.php
    43Plan
  • CVE-2026-84189253 days apartLibreNMS before 26.7.0 Stored XSS via Oxidized API
    36Monitor
  • CVE-2024-53457382 days apartA stored cross-site scripting (XSS) vulnerability in the Device Settings section of LibreNMS v24.9.0 to v24.10.0 allows attackers to execute
    34Monitor
  • CVE-2024-50352402 days apartLibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/overview/services.inc.php
    33Monitor
  • CVE-2025-23200340 days apartStored XSS-LibreNMS-Misc Section in librenms
    30Monitor
  • CVE-2024-47525447 days apartStored XSS ('Cross-site Scripting') in librenms/includes/html/print-alert-rules.php
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records