AUGUST 24, 2026
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Case File

CVE-2026-54002

HIGH · CVSS 8.5 EPSS 0.41% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-09 · Last synced 2026-08-08

CyberRota Analysis

AI-Generated

Kirby CMS versions prior to 4.9.4 and 5.4.4 are vulnerable to stored cross-site scripting (XSS) due to insufficient sanitization of untrusted input in specific fields and sanitization functions. This flaw allows attackers to inject malicious markup, potentially compromising the integrity of affected sites and plugins. Developers and administrators using these versions should prioritize upgrading to the patched releases to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-54002
Severity
HIGH
CVSS
8.5
EPSS
0.41%

Original NVD Description

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize(), Sane::sanitize(), Sane::Html::sanitize(), Sane::Svg::sanitize(), Sane::Xml::sanitize(), Sane::sanitizeFile(), or file sanitizeContents() with untrusted input allow malicious markup injected as children of an unknown HTML or XML tag to pass through Dom::sanitize() without being correctly sanitized, causing stored cross-site scripting. This issue is fixed in versions 4.9.4 and 5.4.4.