CVE-2026-2728
Last modified
CVE-2026-2728 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Librenms | Librenms | < 26.3.0 |
References
- https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-2728?
How severe is CVE-2026-2728?
How do I fix CVE-2026-2728?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-27274Substance3D - Stager versions 3.1.7 and earlier are affected…7.8
- CVE-2026-27275Substance3D - Stager versions 3.1.7 and earlier are affected…7.8
- CVE-2026-27276Substance3D - Stager versions 3.1.7 and earlier are affected…7.8
- CVE-2026-27277Substance3D - Stager versions 3.1.7 and earlier are affected…7.8
- CVE-2026-27278Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.2…7.8
- CVE-2026-27279Substance3D - Stager versions 3.1.7 and earlier are affected…7.8
- CVE-2026-27280DNG SDK versions 1.7.1 2471 and earlier are affected by an o…7.8
- CVE-2026-27281DNG SDK versions 1.7.1 2471 and earlier are affected by an I…5.5
- CVE-2026-27282ColdFusion versions 2023.18, 2025.6 and earlier are affected…7.5
- CVE-2026-27283InDesign Desktop versions 20.5.2, 21.2 and earlier are affec…7.8
- CVE-2026-27284InDesign Desktop versions 20.5.2, 21.2 and earlier are affec…7.8
- CVE-2026-27285InDesign Desktop versions 20.5.2, 21.2 and earlier are affec…5.5
Are you affected by CVE-2026-2728?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST