VDB-362592 · CVE-2026-6956 · EUVD-2026-29049

ATutor 2.2.4 URL cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in ATutor 2.2.4. It has been declared as problematic. Affected is an unknown function of the component URL Handler. The manipulation results in cross site scripting. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is reported as CVE-2026-6956. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in ATutor 2.2.4. Affected is some unknown processing of the component URL Handler. 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:

ATutor is vulnerable to Reflected XSS in /install/install.php endpoint. An attacker can provide a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. Product is no longer actively supported. Maintainers of this project were notified early about this vulnerability, but did not respond with the details of the vulnerability or vulnerable version range. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

The weakness was disclosed by Michał Majchrowicz. The advisory is shared for download at cert.pl. This vulnerability is traded as CVE-2026-6956 since 04/24/2026. 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.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-29049). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Learning Management Software

Name

ATutor

Version

2.2.4

License

free

Support

end of life

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

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

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/24/2026 CVE reserved
05/11/2026 +17 days Advisory disclosed
05/11/2026 +0 days VulDB entry created
05/11/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cert.pl
Researcher: Michał Majchrowicz
Status: Not defined

CVE: CVE-2026-6956 (🔒)
GCVE (CVE): GCVE-0-2026-6956
GCVE (VulDB): GCVE-100-362592
EUVD: 🔒

Entryinfo

Created: 05/11/2026 13:46
Updated: 05/11/2026 16:43
Changes: 05/11/2026 13:46 (67), 05/11/2026 16:43 (1)
Complete: 🔍
Cache ID: 216::103

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