CVE-2026-21896

MEDIUM

5.7

Description

Kirby is an open-source content management system. From versions 5.0.0 to 5.2.1, Kirby is missing permission checks in the content changes API. This vulnerability affects all Kirby sites where user permissions are configured to prevent specific role(s) from performing write actions, specifically by disabling the update permission with the intent to prevent modifications to site content. This vulnerability does not affect those who have not altered the deviated from default user permissions. This issue has been patched in version 5.2.2.

Details CVE

Score CVSS v3.15.7

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurREQUIRED

Publie1/8/2026

Derniere modification2/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

getkirby:kirby

Faiblesses (CWE)

CWE-863

References

https://github.com/getkirby/kirby/commit/f5ce1347b427b819bf193acf11fd0da232f7af47(security-advisories@github.com)

https://github.com/getkirby/kirby/releases/tag/5.2.2(security-advisories@github.com)

https://github.com/getkirby/kirby/security/advisories/GHSA-4j78-4xrm-cr2f(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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