nuxt-modules mdc up to 0.13.2 Vue cross site scripting

Summaryinfo

A vulnerability was found in nuxt-modules mdc up to 0.13.2. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Vue Component. The manipulation results in cross site scripting. This vulnerability was named CVE-2025-24981. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in nuxt-modules mdc up to 0.13.2. Affected is some unknown processing of the component Vue Component. 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:

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. In affected versions unsafe parsing logic of the URL from markdown can lead to arbitrary JavaScript code due to a bypass to the existing guards around the `javascript:` protocol scheme in the URL. The parsing logic implement in `props.ts` maintains a deny-list approach to filtering potential malicious payload. It does so by matching protocol schemes like `javascript:` and others. These security guards can be bypassed by an adversarial that provides JavaScript URLs with HTML entities encoded via hex string. Users who consume this library and perform markdown parsing from unvalidated sources could result in rendering vulnerable XSS anchor links. This vulnerability has been addressed in version 0.13.3 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-24981 since 01/29/2025. 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.

Upgrading to version 0.13.3 eliminates this vulnerability. Applying the patch 99097738b5561639e9bf247c55d8103236618bf3 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

Vendor

• nuxt-modules

Name

• mdc

Version

• 0.13.0
• 0.13.1
• 0.13.2

License

• open-source

Website

• Product: https://github.com/nuxt-modules/mdc/

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CPE 2.2info

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