CVE-2023-4979 — Cross-site Scripting (XSS) - Reflected in GitHub repository librenms/librenms pr

Cross-site Scripting (XSS) - Reflected in GitHub repository librenms/librenms prior to 23.9.0.

01What is this vulnerability?

Cross-site Scripting (XSS) - Reflected in GitHub repository librenms/librenms prior to 23.9.0.

02Affected products

Vendor	Product	Versions
librenms	librenms/librenms	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-09-15T00:00:19.484Z
• Last modified: 2024-09-20T17:31:14.161Z

09References

• huntr.dev — https://huntr.dev/bounties/e67f8f5d-4048-404f-9b86-cb6b8719b77f
• github.com — https://github.com/librenms/librenms/commit/49d66fa31b43acef02eaa09ee9af15fe7e16…