CVE-2026-64607

{"id": "CVE-2026-64607", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64607", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-31T16:24:59.439841Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache HttpComponents Client", "versions": [{"status": "affected", "version": "5.0-alpha", "versionType": "semver", "lessThanOrEqual": "5.6.2"}], "packageName": "org.apache.httpcomponents.client5:httpclient5", "collectionURL": "https://repo.maven.apache.org/maven2/", "defaultStatus": "unaffected"}]}], "published": "2026-07-31T11:17:11.710", "references": [{"url": "https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q", "source": "security@apache.org"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-772"}]}], "descriptions": [{"lang": "en", "value": "HttpClient based on the classic i/o model fails to correctly release the underlying connection back to the connection manager if it encounters an invalid or unsupported `Content-Encoding` header value in the response message.\u00a0Please note this defect does not affect HttpClient based on the async i/o model.\n\nThis issue affects Apache HttpComponents Client: from 5.0-alpha1 through 5.6.2."}], "lastModified": "2026-07-31T17:16:34.483", "sourceIdentifier": "security@apache.org"}