CVEvulnerability
CVE-2026-54003
9.1 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-07-09
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.1 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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
- Weaknesses
- CWE-454
Description
Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the Panel and create the first admin user because local-IP checks trusted those headers incorrectly. This issue is fixed in versions 4.9.4 and 5.4.4.
Related
Weakness · CWE (1)
- CWE-454 External Initialization of Trusted Variables or Data Stores weakness
References
- https://github.com/getkirby/kirby/commit/1c7fee90e49153cf9ca4a6ec17481d25fbedc48d github.com
- https://github.com/getkirby/kirby/commit/3423f66c01dbc0455862e23ee699d2aa469f3234 github.com
- https://github.com/getkirby/kirby/commit/66a3a14bf0892d320723ba766cd5f1d33a51d15b github.com
- https://github.com/getkirby/kirby/commit/ab992dc149610b90e337c2955ab6ccb7f72ffb3a github.com
- https://github.com/getkirby/kirby/pull/8166 github.com
- https://github.com/getkirby/kirby/releases/tag/4.9.4 github.com
- https://github.com/getkirby/kirby/releases/tag/5.4.4 github.com
- https://github.com/getkirby/kirby/security/advisories/GHSA-whxw-24jc-cwmv github.com