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TI-2026-30469 Aliases CVE-2026-42137GHSA-85x2-r8xv-ww8c

Missing authorization in getkirby kirby

Priority LOW 31CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00303 23rd percentileScored 2026-11-07
Fix Fixed kirby (getkirby): 4.9.0, 5.4.0getkirby/cms (Packagist): 4.9.0, 5.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
getkirbykirbybefore 4.9.0; 5.0.0 to before 5.4.04.9.0, 5.4.0Patch availableCNA
—getkirby/cms (Packagist)before 4.9.04.9.0Patch availableGHSA-85x2-r8xv-ww8c
—getkirby/cms (Packagist)5.0.0 to before 5.4.05.4.0Patch availableGHSA-85x2-r8xv-ww8c
  • kirby Vendorgetkirby Affected before 4.9.0; 5.0.0 to before 5.4.0 Fixed in 4.9.0, 5.4.0 Patch available CNA
  • getkirby/cms (Packagist) Vendor— Affected before 4.9.0 Fixed in 4.9.0 Patch available GHSA-85x2-r8xv-ww8c
  • getkirby/cms (Packagist) Vendor— Affected 5.0.0 to before 5.4.0 Fixed in 5.4.0 Patch available GHSA-85x2-r8xv-ww8c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:*before 4.9.0; 5.0.0 to before 5.4.0Vulnerablegetkirby
  • cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:* Versions before 4.9.0; 5.0.0 to before 5.4.0 Vulnerable ·getkirby

Remediation

  • Fix · CNA kirby (getkirby) Fixed in 4.9.0, 5.4.0
  • Fix · GHSA-85x2-r8xv-ww8c getkirby/cms (Packagist) Fixed in 4.9.0 Advisory →
  • Fix · GHSA-85x2-r8xv-ww8c getkirby/cms (Packagist) Fixed in 5.4.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42137
  2. 2026-10-03 Alias added: GHSA-85x2-r8xv-ww8c

References

Patch 1

Other 3

  • TI-2024-17440 An arbitrary file upload vulnerability in the Profile Image module of Kirby CMS v4.1.0… CVSS 3.1HIGH 8.8
  • TI-2024-17439 An HTML injection vulnerability exists in the Edit Content Layout module of Kirby CMS… CVSS 3.1HIGH 7.1
  • TI-2026-23396 Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a… CVSS 3.1MEDIUM 6.5
  • TI-2024-17441 A stored cross-site scripting (XSS) vulnerability in the Edit Content Layout module of… CVSS 3.1MEDIUM 6.1
  • TI-2018-10413 An issue was discovered in Kirby 2.5.12. CVSS 3.1MEDIUM 5.4
  • TI-2024-17438 Kirby CMS v4.1.0 was discovered to contain a reflected self-XSS vulnerability via the URL parameter. CVSS 3.1MEDIUM 4.7
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences