CVE-2026-42051

medium

Published 2026-05-04 · Modified 2026-05-13

CVSS v4

5.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3

4.3

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

VIR risk

4.3

Description

Kirby CMS's system API endpoint leaks installed version and license data to authenticated users

Predictions

Exploit likelihood

53%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Packagist	getkirby/cms	`>=5.0.0,<=5.3.3\|<=4.8.0`
Packagist	getkirby/cms	`<4.9.0`	`4.9.0`
Packagist	getkirby/cms	`>=5.0.0,<5.4.0`	`5.4.0`
COMPOSER	getkirby/cms	`>= 5.0.0, <= 5.3.3`	`5.4.0`
COMPOSER	getkirby/cms	`<= 4.8.0`	`4.9.0`

Application impact

Vendor	Product	Versions	Fixed
getkirby	kirby	`{"endExcluding":"4.9.0"}`	`4.9.0`

References

CWEs

CWE-862

💬 Discuss CVE-2026-42051 on VIR Community →

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.