{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71290", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-08-05T12:30:56.682Z", "datePublished": "2026-08-11T20:33:56.947Z", "dateUpdated": "2026-08-13T09:30:14.754Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2/", "defaultStatus": "unaffected", "packageName": "org.apache.httpcomponents.client5:httpclient5", "product": "Apache HttpComponents Client", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "5.6.3", "status": "affected", "version": "5.4-alpha", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "n0mi1k"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.&nbsp;HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.&nbsp;<br></p><p>Please note the classic version of HttpClient is not affected by this vulnerability.&nbsp;</p><p>Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.<br></p>"}], "value": "Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u00a0HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u00a0\n\n\nPlease note the classic version of HttpClient is not affected by this vulnerability.\u00a0\n\nAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue."}], "metrics": [{"other": {"content": {"text": "important"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-13T09:30:14.754Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-12T19:19:57.559731Z", "id": "CVE-2026-71290", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-12T19:20:21.011Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5.4-alpha,5.6.3]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache HttpComponents Client", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "httpcomponents_client", "vendor": "apache"}], "created": "2026-08-12T14:30:03.148410+00:00", "updated": "2026-08-13T01:00:10.686291+00:00", "vendors": ["apache", "apache$PRODUCT$httpcomponents_client"]}