Vulnerability Details CVE-2026-27627
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.2%
CVSS Severity
CVSS v3 Score 8.2
References
Products affected by CVE-2026-27627
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cpe:2.3:a:localhostlabs:karakeep:0.30.0