Stored Cross-site Scripting in LinkAce Plugin by Kovah
CVE-2026-27458

8.7HIGH

Key Information:

Vendor

Kovah

Status
Linkace
Vendor
CVE Published:
21 February 2026

What is CVE-2026-27458?

A Stored Cross-site Scripting vulnerability in the LinkAce archive plugin allows authenticated users to inject malicious payloads through the Atom feed endpoint for lists (/lists/feed). This flaw originates from improper output sanitization of list descriptions using Blade's raw syntax within a CDATA block, enabling attackers to escape the CDATA section and embed SVG elements directly into the Atom XML document. Consequently, this results in arbitrary JavaScript execution within the browser when the feed URL is accessed. This vulnerability has been resolved in version 2.4.3.

Affected Version(s)

LinkAce < 2.4.3

References

https://github.com/Kovah/LinkAce/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/Kovah/LinkAce/commit/eb5ba2abe05177ffa...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.