XSS in Librenms
CVE-2021-31274
In LibreNMS < 21.3.0, a stored XSS vulnerability was identified in the API Access page due to insufficient sanitization of the $api->description variable. As a result, arbitrary Javascript code can get executed.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
References
- community.librenms.org/t/vulnerability-report-cross-site-scripting-xss-in-the-a… (Vendor Advisory)
- github.com/librenms/librenms (Product, Third Party Advisory)
- github.com/librenms/librenms/pull/12739 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31274?
- CVE-2021-31274 is a medium-severity vulnerability in Librenms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-08.
- How severe is CVE-2021-31274?
- Medium severity. CVSS v3 base score is 5.4 out of 10.