Stored XSS Vulnerability in Moodle's Administration Live Log
CVE-2025-26529

8.3HIGH

Key Information:

Vendor
Moodle Project
Status
Moodle
Vendor
CVE Published:
24 February 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

The vulnerability present in Moodle's site administration live log stems from inadequate sanitization of description information. This flaw allows attackers to inject malicious scripts, which can be executed in the context of an administrator's session, compromising sensitive data and potentially leading to unauthorized actions within the platform. It is vital for users to apply the latest patches and prevent exploitation by enhancing input validation and sanitization processes.

Affected Version(s)

moodle 4.5.0 < 4.5.2

moodle 4.4.0 < 4.4.6

moodle 4.3.0 < 4.3.10

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

moodleTestingEnv
Created by NightBloodz

References

https://moodle.org/mod/forum/discuss.php?d=466145
vendor-advisory
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=...
patch

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.