Moodle up to 4.3.9/4.4.5/4.5.1 Question Bank Filter cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Moodle up to 4.3.9/4.4.5/4.5.1. This impacts an unknown function of the component Question Bank Filter. The manipulation results in cross site scripting. This vulnerability is reported as CVE-2025-26530. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Moodle up to 4.3.9/4.4.5/4.5.1. Affected is an unknown part of the component Question Bank Filter. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

The question bank filter required additional sanitizing to prevent a reflected XSS risk.

The advisory is shared for download at moodle.org. This vulnerability is traded as CVE-2025-26530 since 02/12/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 259890 (Linux Distros Unpatched Vulnerability : CVE-2025-26530), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.3.10, 4.4.6 or 4.5.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (259890). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 8.3
CNA Vector (fedora): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 259890
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-26530

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Moodle 4.3.10/4.4.6/4.5.2

Timelineinfo

02/12/2025 🔍
02/24/2025 +12 days 🔍
02/24/2025 +0 days 🔍
08/31/2025 +188 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: moodle.org
Status: Confirmed

CVE: CVE-2025-26530 (🔍)
GCVE (CVE): GCVE-0-2025-26530
GCVE (VulDB): GCVE-100-296712

Entryinfo

Created: 02/24/2025 22:39
Updated: 08/31/2025 21:13
Changes: 02/24/2025 22:39 (64), 08/11/2025 17:02 (11), 08/31/2025 21:13 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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