CVE-2026-62237 — Grav < 2.0.4 ReDoS via regex_replace in Sandbox
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 sandb…
Published: 2026-07-17 · CVSS: 6.0 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7