WinterCMS Winter up to 1.2.12 JavascriptImporter file inclusion

Summaryinfo

A vulnerability was found in WinterCMS Winter up to 1.2.12. It has been declared as problematic. Impacted is an unknown function of the component JavascriptImporter. Such manipulation leads to file inclusion. This vulnerability is traded as CVE-2026-79773. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in WinterCMS Winter up to 1.2.12 and classified as problematic. Affected by this issue is some unknown processing of the component JavascriptImporter. The manipulation with an unknown input leads to a file inclusion vulnerability. Using CWE to declare the problem leads to CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. Impacted is confidentiality. CVE summarizes:

Winter CMS before 1.2.13 contains a local file inclusion vulnerability in the JavascriptImporter filter that allows authenticated users with cms.manage_assets permission to disclose arbitrary server-readable files by placing =include or =require directives in theme JavaScript assets. Attackers can reference files like .env outside the theme directory, and the combined output served through the combine route becomes readable by unauthenticated visitors, exposing application keys and database credentials.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-79773 since 08/25/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 1.2.13 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• WinterCMS

Name

• Winter

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12

Website

• Product: https://github.com/wintercms/winter/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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