CVE-2026-53653

Description

Grav is a file-based Web platform. Prior to 1.7.53 and 2.0.0-rc.8, Grav allows an unauthenticated visitor to exhaust server memory and CPU by requesting image derivatives with oversized dimensions through URL query image actions such as forceResize in Grav::fallbackUrl, which passes request parameters to ImageMedium magic actions without a dimension or pixel ceiling. This issue is fixed in versions 1.7.53 and 2.0.0-rc.8.

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Weakness Type (CWE)

CWE-770 CWE-770

References

Other References

https://github.com/getgrav/grav/commit/d9f9f0369a07ae5c96cde700c7949e1237b29cf6 https://github.com/getgrav/grav/commit/f4c0f42eea755cedad6f626b342c88d4cba72174 https://github.com/getgrav/grav/releases/tag/1.7.53 https://github.com/getgrav/grav/releases/tag/2.0.0-rc.8 https://github.com/getgrav/grav/security/advisories/GHSA-4x9g-vw65-vvf9

Frequently Asked Questions

What is CVE-2026-53653? +

Grav is a file-based Web platform. Prior to 1.7.53 and 2.0.0-rc.8, Grav allows an unauthenticated visitor to exhaust server memory and CPU by requesting image derivatives with oversized dimensions through URL query image actions such as forceResize in Grav::fallbackUrl, which passes request parameters to ImageMedium magic actions without a dimension or pixel ceiling. This issue is fixed in versions 1.7.53 and 2.0.0-rc.8.

How do I check if I'm vulnerable to CVE-2026-53653? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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