{"answers":{"affected":"4 open source packages ship an affected version, including getgrav/grav.","exploited":"There is no known exploitation of CVE-2026-53653 in the wild and no public exploit code.","fix":"Upgrade getgrav/grav to a fixed version for your release line: 1.7.53 or 2.0.0-rc.8.","what":"CVE-2026-53653 is a high-severity denial of service vulnerability in getgrav grav, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53653 and fix it if it is affected.\n\nWhat it is: CVE-2026-53653 is a high-severity denial of service vulnerability in getgrav grav, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-53653 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- getgrav/grav (Packagist): affected all versions; fixed in 1.7.53\n- getgrav/grav (Packagist): affected all versions; fixed in 1.7.53\n- getgrav/grav (Packagist): affected from 2.0.0-beta.1; fixed in 2.0.0-rc.8\n- getgrav/grav (Packagist): affected from 2.0.0-beta.1; fixed in 2.0.0-rc.8\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53653/ (Markdown: https://insights.sbomify.com/CVE-2026-53653/index.md)","id":"CVE-2026-53653","markdown":"https://insights.sbomify.com/CVE-2026-53653/index.md","name":"CVE-2026-53653","record":{"aliases":["GHSA-4x9g-vw65-vvf9"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Grav web platform","requires_auth":"none","summary":"Unauthenticated attackers can exhaust server resources by requesting image derivatives with oversized dimensions, causing denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"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"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"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.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Grav: Unauthenticated denial of service via unbounded image derivative dimensions","id":"CVE-2026-53653","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Grav: Unauthenticated open redirect via login twofa_cancel _redirect","id":"CVE-2026-53654"},"packages":[{"ecosystem":"Packagist","fixed":["1.7.53"],"introduced":["0"],"last_affected":[],"package":"getgrav/grav","purl":null,"source":"GHSA-4x9g-vw65-vvf9"},{"ecosystem":"Packagist","fixed":["1.7.53"],"introduced":["0"],"last_affected":[],"package":"getgrav/grav","purl":"pkg:composer/getgrav/grav","source":"GHSA-4x9g-vw65-vvf9"},{"ecosystem":"Packagist","fixed":["2.0.0-rc.8"],"introduced":["2.0.0-beta.1"],"last_affected":[],"package":"getgrav/grav","purl":null,"source":"GHSA-4x9g-vw65-vvf9"},{"ecosystem":"Packagist","fixed":["2.0.0-rc.8"],"introduced":["2.0.0-beta.1"],"last_affected":[],"package":"getgrav/grav","purl":"pkg:composer/getgrav/grav","source":"GHSA-4x9g-vw65-vvf9"}],"prev":{"headline":"Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE","id":"CVE-2026-53649"},"products":["grav"],"published":"2026-07-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-10","vendors":["getgrav"]},"summary":"Unauthenticated attackers can exhaust server resources by requesting image derivatives with oversized dimensions, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-53653/"}