CVE-2026-62672
Medium
Description
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.
SeverityMedium
CVSS6.0
Exploit probability—
Product
Grav
PublishedAug 19, 2026
First seenAug 19, 2026
Weakness typeCWE-1333CWE-1333
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| getgrav grav | < 2.0.4 | — |
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