CVE-2021-42112
MEDIUMCVSS 6.1/10EPSS 1.48%
Last modified
CVE-2021-42112 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The "File upload question" functionality in LimeSurvey 3.x-LTS through 3.27.18 allows XSS in assets/scripts/modaldialog.js and assets/scripts/uploader.js.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.
Description
The "File upload question" functionality in LimeSurvey 3.x-LTS through 3.27.18 allows XSS in assets/scripts/modaldialog.js and assets/scripts/uploader.js.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Limesurvey | Limesurvey | >= 3.0.0, <= 3.27.18 |
References
- https://bugs.limesurvey.org/view.php?id=17562Permissions Required
- https://github.com/LimeSurvey/LimeSurvey/commit/d56619a50cfd191bbffd0adb660638a5e438070dPatch, Third Party Advisory
- https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_limesurvey_-_cve-2021-42112.pdfExploit, Third Party Advisory
- https://bugs.limesurvey.org/view.php?id=17562Permissions Required
- https://github.com/LimeSurvey/LimeSurvey/commit/d56619a50cfd191bbffd0adb660638a5e438070dPatch, Third Party Advisory
- https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_limesurvey_-_cve-2021-42112.pdfExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42112?
The "File upload question" functionality in LimeSurvey 3.x-LTS through 3.27.18 allows XSS in assets/scripts/modaldialog.js and assets/scripts/uploader.js.
How severe is CVE-2021-42112?
CVE-2021-42112 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42112?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42112?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST