CVE-2026-53653: CWE-770: Allocation of Resources Without Limits or Throttling in getgrav grav
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.
AI Analysis
Technical Summary
CVE-2026-53653 is a resource exhaustion vulnerability in Grav where unauthenticated visitors can cause excessive memory and CPU consumption by requesting image derivatives with large dimensions through URL query parameters such as forceResize. The vulnerability arises due to the lack of limits or throttling in the Grav::fallbackUrl function, which passes parameters to ImageMedium magic actions without enforcing dimension or pixel ceilings. This can lead to denial of service conditions. The vulnerability affects Grav versions prior to 1.7.53 and version 2.0.0-rc.8. The issue is resolved in versions 1.7.53 and 2.0.0-rc.8.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to exhaust server memory and CPU resources by crafting requests for image derivatives with oversized dimensions. This can degrade server performance or cause denial of service, impacting availability of the Grav platform.
Mitigation Recommendations
The vulnerability is fixed in Grav versions 1.7.53 and 2.0.0-rc.8. Users should upgrade to these versions or later to remediate the issue. Patch status is not explicitly confirmed beyond these versions; verify with the vendor advisory for the latest remediation guidance.
CVE-2026-53653: CWE-770: Allocation of Resources Without Limits or Throttling in getgrav grav
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.
CVSS v4.0
Score 8.7high
Affected software
pkg:github/getgrav/gravRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-53653 is a resource exhaustion vulnerability in Grav where unauthenticated visitors can cause excessive memory and CPU consumption by requesting image derivatives with large dimensions through URL query parameters such as forceResize. The vulnerability arises due to the lack of limits or throttling in the Grav::fallbackUrl function, which passes parameters to ImageMedium magic actions without enforcing dimension or pixel ceilings. This can lead to denial of service conditions. The vulnerability affects Grav versions prior to 1.7.53 and version 2.0.0-rc.8. The issue is resolved in versions 1.7.53 and 2.0.0-rc.8.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to exhaust server memory and CPU resources by crafting requests for image derivatives with oversized dimensions. This can degrade server performance or cause denial of service, impacting availability of the Grav platform.
Mitigation Recommendations
The vulnerability is fixed in Grav versions 1.7.53 and 2.0.0-rc.8. Users should upgrade to these versions or later to remediate the issue. Patch status is not explicitly confirmed beyond these versions; verify with the vendor advisory for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-09T20:50:36.876Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a511ed468715ace43d68955
Added to database: 07/10/2026, 16:33:24 UTC
Last enriched: 07/10/2026, 16:48:36 UTC
Last updated: 07/10/2026, 21:03:31 UTC
Views: 9
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