CVE-2026-53505

{"id": "CVE-2026-53505", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53505", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-03T17:20:18.124845Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "thumbor", "product": "thumbor", "versions": [{"status": "affected", "version": "< 7.8.0"}]}]}], "published": "2026-07-31T19:17:10.123", "references": [{"url": "https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023", "source": "security-advisories@github.com"}, {"url": "https://github.com/thumbor/thumbor/releases/tag/7.8.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> and runs in the post-transform phase. An attacker can trigger extremely large resizes (CPU/memory exhaustion) and cause denial of service. This issue is fixed in 7.8.0."}], "lastModified": "2026-09-08T20:51:43.490", "sourceIdentifier": "security-advisories@github.com"}