Server-Side Request Forgery (SSRF) in Moodle - #VU148875
Published: September 10, 2026
Vulnerability identifier: #VU148875
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to incorrect handling of IPv4-mapped IPv6 addresses in URL downloader. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Moodle
Remediation
Install updates from vendor's website.
Moodle - addressed in versions 4.5.13, 5.0.9, 5.1.6, 5.2.2