What’s Vulnerable › Vulnerabilities
CVE-2026-12271: Tutor LMS < 3.9.13 - Subscriber+ Arbitrary Quiz Attempt Modification via IDOR
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-13 · updated 2026-07-13
Description
The Tutor LMS WordPress plugin before 3.9.13 does not verify ownership of the targeted quiz attempt before writing to it, allowing authenticated users with subscriber-level access and above to modify and force-complete other students' quiz attempts, overwriting their recorded marks and pass/fail result.
Affected products
- themeum Tutor LMS – eLearning and online course solution: before 3.9.13 — fixed in 3.9.13
How to fix
Upgrade to a fixed version: themeum Tutor LMS – eLearning and online course solution 3.9.13. Check the vendor advisory for mitigations.
References
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