Stored Cross-Site Scripting Vulnerability in LimeSurvey Administration Panel
CVE-2020-36993

5.1MEDIUM

Key Information:

Vendor

Limesurvey

Status
Limesurvey
Vendor
CVE Published:
28 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36993?

LimeSurvey version 4.3.10 is susceptible to a stored cross-site scripting vulnerability found in the Survey Menu of the administration panel. This issue allows attackers to inject malicious SVG scripts by manipulating the Surveymenu[title] and Surveymenu[parent_id] parameters. If successful, this could lead to the execution of arbitrary JavaScript within an administrative context, posing a significant risk to the integrity and security of the application.

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Affected Version(s)

LimeSurvey 0 <= 4.3.10

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36993 - Proof of Concept

References

https://www.exploit-db.com/exploits/48762
exploit
https://www.limesurvey.org
product
https://github.com/LimeSurvey/LimeSurvey/commit/3712854a8...
issue-trackingpatch

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Matthew Aberegg
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