{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53653","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-09T20:50:36.876Z","datePublished":"2026-07-10T16:12:01.576Z","dateUpdated":"2026-07-10T20:58:50.005Z"},"containers":{"cna":{"title":"Grav: Unauthenticated denial of service via unbounded image derivative dimensions","problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/getgrav/grav/security/advisories/GHSA-4x9g-vw65-vvf9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-4x9g-vw65-vvf9"},{"name":"https://github.com/getgrav/grav/commit/d9f9f0369a07ae5c96cde700c7949e1237b29cf6","tags":["x_refsource_MISC"],"url":"https://github.com/getgrav/grav/commit/d9f9f0369a07ae5c96cde700c7949e1237b29cf6"},{"name":"https://github.com/getgrav/grav/commit/f4c0f42eea755cedad6f626b342c88d4cba72174","tags":["x_refsource_MISC"],"url":"https://github.com/getgrav/grav/commit/f4c0f42eea755cedad6f626b342c88d4cba72174"},{"name":"https://github.com/getgrav/grav/releases/tag/1.7.53","tags":["x_refsource_MISC"],"url":"https://github.com/getgrav/grav/releases/tag/1.7.53"},{"name":"https://github.com/getgrav/grav/releases/tag/2.0.0-rc.8","tags":["x_refsource_MISC"],"url":"https://github.com/getgrav/grav/releases/tag/2.0.0-rc.8"}],"affected":[{"vendor":"getgrav","product":"grav","versions":[{"version":">= 2.0.0-beta.1, < 2.0.0-rc.8","status":"affected"},{"version":"< 1.7.53","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T16:12:01.576Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-4x9g-vw65-vvf9","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T20:53:11.243262Z","id":"CVE-2026-53653","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-10T20:58:50.005Z"}}]}}