CVE WatchJul 17, 2026

CVE-2026-62237

Grav before 2.0.4 contains a regular expression denial of service (ReDoS) vulnerability in the regex_replace filter and function, which are

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Jul 17, 2026 · Last modified: Jul 17, 2026 · CWE-1333

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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