What’s Vulnerable › Vulnerabilities

CVE-2021-42112

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-08 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• LimeSurvey: from 3.0.0 through 3.27.18

References

• https://bugs.limesurvey.org/view.php?id=17562
• https://github.com/LimeSurvey/LimeSurvey/commit/d56619a50cfd191bbffd0adb660638a5e438070d
• https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_limesurvey_-_cve-2021-42112.pdf
• https://bugs.limesurvey.org/view.php?id=17562
• https://github.com/LimeSurvey/LimeSurvey/commit/d56619a50cfd191bbffd0adb660638a5e438070d
• https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_limesurvey_-_cve-2021-42112.pdf

Get alerted when CVE-2021-42112 or the next vulnerability affects your stack