CVE-2026-2728 - Vulnerability Details - OpenCVE

LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

librenms

librenms

unaffected

Version	Status	Constraints
`0`	affected	< 26.3.0

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630

History

Mon, 13 Apr 2026 11:15:00 +0000

Type	Values Removed	Values Added
Description		LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.
Weaknesses		CWE-79
References		https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630
Metrics		cvssV4_0 `{'score': 4.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: PRJBLK

Published: 2026-04-13T10:39:54.757Z

Updated: 2026-04-13T10:44:47.028Z

Reserved: 2026-02-18T23:44:14.961Z

Link: CVE-2026-2728

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-04-13T11:16:05.407

Modified: 2026-04-13T11:16:05.407

Link: CVE-2026-2728

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-79

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