CVE-2026-42069: Kirby CMS's read access to site, user and role information is not gated by permissions

high Affects getkirby/cms. Feed 2026.10.29.1, updated 2026-10-28; published 2026-05-04; advisory modified 2026-05-13.

Kirby CMS's read access to site, user and role information is not gated by permissions

Package: getkirby/cms Composer
Affected versions: <4.9.0 or >=5.0.0 and <5.4.0
Fixed in: 4.9.0, 5.4.0
Severity: high
Exploitation: not on CISA KEV · EPSS 0% (13.9th percentile)
Published: 2026-05-04
Source: osv.dev

References

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

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