karakeep-app karakeep 0.30.0 cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in karakeep-app karakeep 0.30.0. Affected by this issue is some unknown functionality. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2026-27627. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in karakeep-app karakeep 0.30.0. This affects an unknown functionality. 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. The summary by CVE is:

Karakeep is a elf-hostable bookmark-everything app. In version 0.30.0, when the Reddit metascraper plugin returns `readableContentHtml`, the HTML parsing subprocess uses it directly without running it through DOMPurify. Every other content source in the crawler goes through Readability + DOMPurify, but the Reddit path skips both. Since this content ends up in `dangerouslySetInnerHTML` in the reader view, any malicious HTML in the Reddit response gets executed in the user's browser. Version 0.31.0 contains a patch for this issue.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-27627 since 02/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 0.31.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ba3db953c0d8675e2e3ecc29113a332b570b2cb9 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

• karakeep-app

Name

• karakeep

Version

• 0.30.0

License

• open-source

Website

• Product: https://github.com/karakeep-app/karakeep/

CPE 2.3info

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CPE 2.2info

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