Vulnerability · Published Oct 30, 2026 · Assigned by GitHub_M

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

Medium 5.3

In plain English

A medium-severity missing authorization in lms from frappe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.2%top 87.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
frappe	lms	< 2.54.0

Weakness: CWE-862 · 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

References

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