What is CVE-2026-27458?

CVE-2026-27458 is a medium-severity vulnerability in Kovah Linkace, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.4/10. Published 2026-02-21.

How severe is CVE-2026-27458?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Kovah Linkace

CVE-2026-27458

LinkAce is a self-hosted archive to collect website links. Versions 2.4.2 and below have a Stored Cross-site Scripting vulnerability through the Atom feed endpoint for lists (/lists/feed). An authenticated user can inject a CDATA-breaking…

EPSS: 0.002 (12.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Kovah Linkace — versions < 2.4.3
Linkace

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27458?: CVE-2026-27458 is a medium-severity vulnerability in Kovah Linkace, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.4/10. Published 2026-02-21.
How severe is CVE-2026-27458?: Medium severity. CVSS v3 base score is 5.4 out of 10.