Kirby: `pages.access` permission is not checked in the pages picker for parent pages
Priority LOW 25CWE-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
- Low · 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 4.9.4 and 5.4.4, Kirby sites using the pages field with roles that have the pages.access permission disabled allowed authenticated users to provide an inaccessible parent page or site to the page picker backend and confirm arbitrary page existence and retrieve title field values. This issue is fixed in versions 4.9.4 and 5.4.4.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00484 41st percentileScored 2026-11-07
Fix Fixed kirby (getkirby): 4.9.4, 5.4.4getkirby/cms (Packagist): 4.9.4, 5.4.4
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| getkirby | kirby | before 4.9.4; 5.0.0 to before 5.4.4 | 4.9.4, 5.4.4 | Patch available | CNA |
| — | getkirby/cms (Packagist) | before 4.9.4 | 4.9.4 | Patch available | GHSA-23q2-54qv-rq5x |
| — | getkirby/cms (Packagist) | 5.0.0-alpha.1 to before 5.4.4 | 5.4.4 | Patch available | GHSA-23q2-54qv-rq5x |
- kirby Vendorgetkirby Affected before 4.9.4; 5.0.0 to before 5.4.4 Fixed in 4.9.4, 5.4.4 Patch available CNA
- getkirby/cms (Packagist) Vendor— Affected before 4.9.4 Fixed in 4.9.4 Patch available GHSA-23q2-54qv-rq5x
- getkirby/cms (Packagist) Vendor— Affected 5.0.0-alpha.1 to before 5.4.4 Fixed in 5.4.4 Patch available GHSA-23q2-54qv-rq5x
Remediation
- Fix · CNA kirby (getkirby) Fixed in 4.9.4, 5.4.4
- Fix · GHSA-23q2-54qv-rq5x getkirby/cms (Packagist) Fixed in 4.9.4 Advisory →
- Fix · GHSA-23q2-54qv-rq5x getkirby/cms (Packagist) Fixed in 5.4.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-49274
- 2026-10-03 Alias added: GHSA-23q2-54qv-rq5x
References
Other 8
- https://github.com/getkirby/kirby/security/advisories/GHSA-23q2-54qv-rq5x
- https://github.com/getkirby/kirby/commit/1ae575da24e1b1cb8803a031d37eff14606d7c55
- https://github.com/getkirby/kirby/commit/3bad37117adf2013548a784f820ddb2d8317333c
- https://github.com/getkirby/kirby/commit/3f4398cdcf9f50f84fdac52ad78a7a85fb31589f
- https://github.com/getkirby/kirby/commit/bffffce6c081f69c46163cc89b1fd18ccf2a18d1
- https://github.com/getkirby/kirby/releases/tag/4.9.4
- https://github.com/getkirby/kirby/releases/tag/5.4.4
- https://github.com/getkirby/kirby
More getkirby vulnerabilities
- 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
Sources
- CVE-2026-49274 · CVE Program
- CVE-2026-49274 · NVD
- FIRST EPSS
- GHSA-23q2-54qv-rq5x · GitHub Advisory Database · CC BY 4.0
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