CVE-2026-42051

4.3 MEDIUM

Published: May 09, 2026 Modified: May 18, 2026

Description

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/getkirby/kirby/releases/tag/4.9.0

Source: security-advisories@github.com

Release Notes

https://github.com/getkirby/kirby/releases/tag/5.4.0

Source: security-advisories@github.com

Release Notes

https://github.com/getkirby/kirby/security/advisories/GHSA-x68m-c7jf-2572

Source: security-advisories@github.com

Patch Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

4.3 / 10.0

EPSS (Exploit Probability)

0.2%

9th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-862

Affected Vendors

getkirby

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