CVE-2026-75592: Kirby: Access to image files outside of the site root via path traversal in the media handling

medium Affects getkirby/cms. Feed 2026.10.29.4, updated 2026-10-29; published 2026-09-02.

Kirby: Access to image files outside of the site root via path traversal in the media handling

Package: getkirby/cms Composer
Affected versions: <4.9.5 or >=5.0.0 and <5.5.2
Fixed in: 4.9.5, 5.5.2
Severity: medium
Exploitation: not on CISA KEV · EPSS 1% (52.2th percentile)
Published: 2026-09-02
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

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

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