CVE-2026-42137

medium

Published 2026-04-30 · Modified 2026-04-30

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

6.5

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

CVSS v4 NEW

7.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/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

VIR risk

6.5

Description

Kirby CMS's `pages.access/list` and `files.access/list` permissions are not consistently checked in the Panel and REST API

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

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 CWE-863

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

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