MasaCMS up to 7.2.8/7.3.13/7.4.7/7.5.1 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in MasaCMS up to 7.2.8/7.3.13/7.4.7/7.5.1. Affected by this issue is some unknown functionality. Such manipulation leads to cross site scripting. This vulnerability is listed as CVE-2025-66492. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in MasaCMS up to 7.2.8/7.3.13/7.4.7/7.5.1 and classified as problematic. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly included within the <head> section of the HTML page. An attacker can execute arbitrary scripts in the context of the user's session, potentially leading to Session Hijacking, Data Theft, Defacement and Malware Distribution. This issue is fixed in versions 7.5.2, 7.4.9, 7.3.14, and 7.2.9. To work around this issue, configure a Web Application Firewall (WAF) rule (e.g., ModSecurity) to block requests containing common XSS payload characters in the ajax query parameter. Alternatively, implement server-side sanitization using middleware to strip or escape dangerous characters from the ajax parameter before it reaches the vulnerable rendering logic.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-66492 since 12/02/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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.

Upgrading to version 7.2.9, 7.3.14, 7.4.8 or 7.5.2 eliminates this vulnerability. Applying the patch 376c27196b1e2489888b7a000cdf5c45bb85959e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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: 6.1

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

NVD Base Score: 6.1
NVD Vector: 🔒

CNA Base Score: 8.2
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MasaCMS 7.2.9/7.3.14/7.4.8/7.5.2
Patch: 376c27196b1e2489888b7a000cdf5c45bb85959e

Timelineinfo

12/02/2025 CVE reserved
12/12/2025 +10 days Advisory disclosed
12/12/2025 +0 days VulDB entry created
12/23/2025 +11 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-249c-vqwv-43vc
Status: Confirmed

CVE: CVE-2025-66492 (🔒)
GCVE (CVE): GCVE-0-2025-66492
GCVE (VulDB): GCVE-100-336128

Entryinfo

Created: 12/12/2025 07:36
Updated: 12/23/2025 03:42
Changes: 12/12/2025 07:36 (65), 12/12/2025 13:12 (1), 12/23/2025 03:42 (9)
Complete: 🔍
Cache ID: 216::103

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