CVE-2026-62237

Description

Grav before 2.0.4 contains a regular expression denial of service (ReDoS) vulnerability in the regex_replace filter and function, which are allowlisted in the Twig content sandbox. When Twig processing in page content is enabled (security.twig_content.process_enabled: true, disabled by default), an authenticated page editor can supply a catastrophically backtracking PCRE pattern that is passed directly to PHP's preg_replace(), causing unbounded CPU consumption and denial of service to the web server process.

References

https://www.vulncheck.com/advisories/grav-redos-via-regex-replace-in-sandbox

https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4