CVE-2026-42137 json
Kirby: `pages.access/list` and `files.access/list` permissions are not consistently checked in the REST API and changes dialog
published 6mo ago modified 3mo ago also EUVD-2026-28889 , GHSA-85x2-r8xv-ww8c
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, `pages.access/list` and `files.access/list` permissions are not consistently checked in the Panel and REST API. This issue has been patched in versions 4.9.0 and 5.4.0.
Patch / fix
- packagist getkirby/cms 4.9.0, 5.4.0
- getkirby kirby 4.9.0, 5.4.0
- getkirby panel 4.9.0, 5.4.0
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 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 |
| CNA | 4.0 | 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 |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | getkirby/cms | <4.9.0 >=5.0.0, <5.4.0 |
4.9.0 5.4.0 |
Affected products
- getkirby kirby
Classification
References
-
github.com
/getkirby/kirby/security/advisories/GHSA-85x2-r8xv-ww8c
web, patch, vendor-advisory
-
github.com
/getkirby/kirby/releases/tag/4.9.0
web, release-notes
-
github.com
/getkirby/kirby/releases/tag/5.4.0
web, release-notes
-
github.com
/getkirby/kirby
package
Sources
- CVE List CVE-2026-42137
- GitHub Advisory GHSA-85x2-r8xv-ww8c
- NVD CVE-2026-42137
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.