SourceCodester AI Font Matcher up to 2025-10-10 Webfonts API cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in SourceCodester AI Font Matcher up to 2025-10-10. Affected by this vulnerability is an unknown functionality of the component Webfonts API Handler. The manipulation leads to cross site scripting. This vulnerability is documented as CVE-2025-63708. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in SourceCodester AI Font Matcher up to 2025-10-10. This issue affects an unknown code of the component Webfonts API Handler. 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. The summary by CVE is:

Cross-Site Scripting (XSS) vulnerability exists in SourceCodester AI Font Matcher (nid=18425, 2025-10-10) that allows remote attackers to execute arbitrary JavaScript in victims' browsers. The vulnerability occurs in the webfonts API handling mechanism where font family names are not properly sanitized. An attacker can intercept fetch requests to the webfonts endpoint and inject malicious JavaScript payloads through font family names, resulting in session cookie theft, account hijacking, and unauthorized actions performed on behalf of authenticated users. The vulnerability can be exploited by injecting a fetch hook that returns controlled font data containing malicious scripts.

The identification of this vulnerability is CVE-2025-63708 since 10/27/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• SourceCodester

Name

• AI Font Matcher

Version

• 2025-10-10

License

• free

Website

• Vendor: https://www.sourcecodester.com/

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