PT-2025-7686 · Moodle+2 · Moodle+2

Nightbloodz · Published 2025-02-18 · Updated 2026-01-02 · CVE-2025-26529

Positive Technologies (AI Summary)

CVSS v3.1

8.3

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Moodle versions prior to 4.5.4-alt1

Description The issue is a stored Cross-Site Scripting (XSS) risk within the site administration live log. Insufficient sanitization of description information displayed in this log allows for the injection of malicious scripts. Exploitation of this issue could potentially lead to remote code execution (RCE) and account takeover. Proof-of-concept (PoC) exploits have been published. The vulnerability stems from a lack of protection measures for the structure of web pages.

Recommendations Upgrade to Moodle version 4.5.4-alt1 or later to address this issue.

Fix

RCE

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2025-6924

ALT-PU-2025-7344

BDU:2025-02329

BIT-MOODLE-2025-26529

CVE-2025-26529

GHSA-WR88-X8CM-7CGQ

Affected Products

Alt Linux

Moodle

Red Os

References · 29

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-84145 · Patch
• https://osv.dev/vulnerability/CVE-2025-26529 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-26529 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-26529 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-02329 · Security Note
• https://moodle.org/mod/forum/discuss.php?d=466145 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-wr88-x8cm-7cgq · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/718392 · Security Note
• https://osv.dev/vulnerability/BIT-moodle-2025-26529 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-26529 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-26529 · Security Note
• https://github.com/moodle/moodle · Note
• https://github.com/NightBloodz/moodleTestingEnv · Note
• https://twitter.com/DarkWebInformer/status/2007201733374816481 · Twitter Post