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TI-2024-17949 Aliases CVE-2024-27087GHSA-63h4-w25c-3qv4

Kirby cross-site scripting (XSS) in the link field "Custom" type

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Kirby is a content management system. The new link field introduced in Kirby 4 allows several different link types that each validate the entered link to the relevant URL format. It also includes a "Custom" link type for advanced use cases that don't fit any of the pre-defined link formats. As the "Custom" link type is meant to be flexible, it also allows the javascript: URL scheme. In some use cases this can be intended, but it can also be misused by attackers to execute arbitrary JavaScript code when a user or visitor clicks on a link that is generated from the contents of the link field. This vulnerability is patched in 4.1.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00348 28th percentileScored 2026-11-07
Fix Fixed kirby (getkirby): 4.1.1getkirby/cms (Packagist): 4.1.1

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
getkirbykirby4.0.0 to before 4.1.14.1.1Patch availableCNA
—getkirby/cms (Packagist)4.0.0 to before 4.1.14.1.1Patch availableGHSA-63h4-w25c-3qv4
  • kirby Vendorgetkirby Affected 4.0.0 to before 4.1.1 Fixed in 4.1.1 Patch available CNA
  • getkirby/cms (Packagist) Vendor— Affected 4.0.0 to before 4.1.1 Fixed in 4.1.1 Patch available GHSA-63h4-w25c-3qv4

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:*4.0.0 to before 4.1.1Vulnerablegetkirby
  • cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.1.1 Vulnerable ·getkirby

Remediation

  • Fix · CNA kirby (getkirby) Fixed in 4.1.1
  • Fix · GHSA-63h4-w25c-3qv4 getkirby/cms (Packagist) Fixed in 4.1.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-27087
  2. 2026-10-03 Alias added: GHSA-63h4-w25c-3qv4

References

Patch 1

Advisory 2

Other 2

  • 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