PatchTheCVECVE-2020-36993: LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the
CVE-2020-36993 is a medium-severity flaw (CVSS 5.4) affecting limesurvey. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.4 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 79%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-01-28 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-36993?
limesurvey: upgrade to newer than 4.3.10. Exact commands for each OS are on this page.
Is CVE-2020-36993 being exploited?
CVE-2020-36993 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-36993 affect?
CVE-2020-36993 affects limesurvey. Severity is medium (CVSS 5.4). 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] paramete
How urgent is CVE-2020-36993?
Priority 29/100. Public exploit reference
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