XSS in Limesurvey
CVE-2020-36993
LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative contexts.
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: 0.003 (19.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Limesurvey — versions 0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48762 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.limesurvey.org (Product, product)
- github.com/LimeSurvey/LimeSurvey/commit/3712854a8fd8d875c67640969a1d54c4d93d3676 (issue-tracking, Patch, patch)
- www.vulncheck.com/advisories/limesurvey-survey-menu-persistent-cross-site-scrip… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-36993?
- CVE-2020-36993 is a medium-severity vulnerability in Limesurvey, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-28.
- How severe is CVE-2020-36993?
- Medium severity. CVSS v3 base score is 5.4 out of 10.