CVE-2026-62672

6.0 mediumEPSS 0.4%

Medium (6.0). EPSS 0.4% chance of exploitation in the next 30 days.

Grav is a file-based Web platform. Prior to 2.0.4, Grav allowlists the regex_replace filter and function in system/config/security.yaml, and GravExtension::regexReplace() passes an editor-controlled pattern directly to preg_replace(). When security.twig_content.process_enabled is enabled, an authenticated page editor can publish a catastrophically backtracking pattern that consumes PHP worker CPU and denies service to site visitors. This issue is fixed in version 2.0.4.

Severity

CVSS 4.0

6.0 medium

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-1333
Published: 2026-08-19
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://github.com/getgrav/grav/commit/907116268ad4f48be7472c57f64981918578599a
https://github.com/getgrav/grav/releases/tag/2.0.4
https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9
https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9

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