CVE-2026-29113: Craft CMS has a potential information disclosure vulnerability in preview tokens

low Affects craftcms/cms. Feed 2026.10.29.2, updated 2026-10-29; published 2026-03-10; advisory modified 2026-09-02.

Craft CMS has a potential information disclosure vulnerability in preview tokens

Package: craftcms/cms Composer
Affected versions: >=4.0.0-RC1 and <4.17.3 or >=5.0.0-RC1 and <5.9.7
Fixed in: 4.17.3, 5.9.7
Severity: low
Exploitation: not on CISA KEV · EPSS 0% (8.1th percentile)
Published: 2026-03-10
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

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

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