What is CVE-2026-27627?

CVE-2026-27627 is a high-severity vulnerability in Karakeep-app Karakeep, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-02-25.

How severe is CVE-2026-27627?

High severity. CVSS v3 base score is 8.2 out of 10.

XSS in Karakeep-app Karakeep

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

Affected products

Karakeep-app Karakeep — versions = 0.30.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/karakeep-app/karakeep/security/advisories/GHSA-mg93-f9mw-wpgj (x_refsource_CONFIRM)
https://github.com/karakeep-app/karakeep/commit/ba3db953c0d8675e2e3ecc29113a332b570b2cb9 (x_refsource_MISC)
https://github.com/karakeep-app/karakeep/releases/tag/v0.31.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27627?: CVE-2026-27627 is a high-severity vulnerability in Karakeep-app Karakeep, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-02-25.
How severe is CVE-2026-27627?: High severity. CVSS v3 base score is 8.2 out of 10.