LearnPress <= 4.4.1 - Missing Authorization to Unauthenticated Sensitive Information Exposure via /lp/v1/users/check-answer and /start-quiz REST Endpoints

Summary

CVE	CVE-2026-13765
State	PUBLISHED
Assigner	Wordfence
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-07-17 05:16:37 UTC
Updated	2026-07-17 05:16:37 UTC
Description	The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.4.1 via the check_answer. This makes it possible for unauthenticated attackers to extract the correct-answer markers, full option lists, explanations, and question content for any quiz question on the site — including questions belonging to paid courses the attacker is not enrolled in.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`
3.1	CNA	DECLARED	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Thimpress	LearnPress WordPress LMS Plugin For Create And Sell Online Courses	affected 4.4.1 semver	Not specified

References

Reference	Source	Link	Tags
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/lp-template-functions.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/course/class-lp-course-no-r...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/ee3bbf20-43fd-4977-b0ba-b81e7...	[email protected]	www.wordfence.com
plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/lp-template-functions.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/course/class-lp-course-no-r...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/learnpress/tags/4.4.1/inc/rest-api/v1/frontend/class-...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset	[email protected]	plugins.trac.wordpress.org
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: 이성민 (en)

Additional Advisory Data

Source	Time	Event
CNA	2026-06-29T20:02:00.000Z	Vendor Notified
CNA	2026-07-16T15:14:19.000Z	Disclosed

There are currently no legacy QID mappings associated with this CVE.