Vulnerability DatabaseCVE-2025-67849
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CVE-2025-67849
Published:February 03, 2026
Updated:May 16, 2026
A flaw was found in Moodle. This cross-site scripting (XSS) vulnerability, caused by improper sanitization of AI prompt responses, allows attackers to inject malicious HTML or script into web pages. When other users view these compromised pages, their sessions could be stolen, or the user interface could be manipulated.
Affected Packages
https://github.com/moodle/moodle.git (GITHUB):
Affected version(s) >=v4.5.0 <v4.5.8
Fix Suggestion:
Update to version v4.5.8
https://github.com/moodle/moodle.git (GITHUB):
Affected version(s) =v5.1.0 <v5.1.1
Fix Suggestion:
Update to version v5.1.1
https://github.com/moodle/moodle.git (GITHUB):
Affected version(s) >=v5.0.0 <v5.0.4
Fix Suggestion:
Update to version v5.0.4
moodle/moodle (PHP):
Affected version(s) >=v4.5.0 <v4.5.8
Fix Suggestion:
Update to version v4.5.8
moodle/moodle (PHP):
Affected version(s) =v5.1.0 <v5.1.1
Fix Suggestion:
Update to version v5.1.1
moodle/moodle (PHP):
Affected version(s) >=v5.0.0-beta <v5.0.4
Fix Suggestion:
Update to version v5.0.4
moodle/moodle (PHP):
Affected version(s) >=v4.5.0-beta <v4.5.8
Fix Suggestion:
Update to version v4.5.8
moodle/moodle (PHP):
Affected version(s) >=v5.1.0-beta <v5.1.1
Fix Suggestion:
Update to version v5.1.1
moodle/moodle (PHP):
Affected version(s) >=v5.0.0 <v5.0.4
Fix Suggestion:
Update to version v5.0.4
moodle/moodle (PHP):
Affected version(s) >=v4.4.0-beta <v4.4.12
Fix Suggestion:
Update to version v4.4.12
Related Resources (6)
https://access.redhat.com/security/cve/CVE-2025-67849
https://github.com/moodle/moodle
https://nvd.nist.gov/vuln/detail/CVE-2025-67849
https://bugzilla.redhat.com/show_bug.cgi?id=2423835
https://github.com/moodle/moodle/commit/a3063dcaa44dbe66e60a37cadb33bfadfe4feb03
https://moodle.org/mod/forum/discuss.php?d=471299
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CVSS v4
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
EPSS
Base Score:
0.01