CVE-2026-42051 — MEDIUM (4.3)

Q: How severe is CVE-2026-42051?

CVE-2026-42051 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-42051?

Check the references section above for vendor advisories and patch information. Affected products include: Getkirby Kirby.

Vulnerability 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.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Getkirby	Kirby	< 4.9.0

Related Weaknesses (CWE)

CWE-862

References

https://github.com/getkirby/kirby/releases/tag/4.9.0Release Notes
https://github.com/getkirby/kirby/releases/tag/5.4.0Release Notes
https://github.com/getkirby/kirby/security/advisories/GHSA-x68m-c7jf-2572PatchVendor Advisory

FAQ

What is CVE-2026-42051?

CVE-2026-42051 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 patch...

How severe is CVE-2026-42051?

CVE-2026-42051 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-42051?

Check the references section above for vendor advisories and patch information. Affected products include: Getkirby Kirby.