CVE-2023-34448: Grav Server-side Template Injection (SSTI) via Twig Default Filters

high Affects getgrav/grav. Feed 2026.10.29.4, updated 2026-10-29; published 2023-06-16; advisory modified 2026-09-10.

Grav Server-side Template Injection (SSTI) via Twig Default Filters

Package: getgrav/grav Composer
Affected versions: <1.7.42
Fixed in: 1.7.42
Severity: high CVSS 7.2
Exploitation: not on CISA KEV · EPSS 5% (91.5th percentile)
Published: 2023-06-16
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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Install docs How findings are ranked

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