{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-66577","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2025-12-04T18:53:42.398Z","datePublished":"2025-12-05T18:20:25.852Z","dateUpdated":"2025-12-05T18:29:10.535Z"},"containers":{"cna":{"title":"cpp-httplib Untrusted HTTP Header Handling: X-Forwarded-For/X-Real-IP Trust","problemTypes":[{"descriptions":[{"cweId":"CWE-117","lang":"en","description":"CWE-117: Improper Output Neutralization for Logs","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-807","lang":"en","description":"CWE-807: Reliance on Untrusted Inputs in a Security Decision","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-gfpf-r66f-5mh2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-gfpf-r66f-5mh2"},{"name":"https://github.com/yhirose/cpp-httplib/commit/ac9ebb0ee333ce8bf13523f487bdfad9518a2aff","tags":["x_refsource_MISC"],"url":"https://github.com/yhirose/cpp-httplib/commit/ac9ebb0ee333ce8bf13523f487bdfad9518a2aff"}],"affected":[{"vendor":"yhirose","product":"cpp-httplib","versions":[{"version":"< 0.27.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2025-12-05T18:20:25.852Z"},"descriptions":[{"lang":"en","value":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can supply X-Forwarded-For or X-Real-IP headers which get accepted unconditionally by get_client_ip() in docker/main.cc, causing access and error logs (nginx_access_logger / nginx_error_logger) to record spoofed client IPs (log poisoning / audit evasion). This vulnerability is fixed in 0.27.0."}],"source":{"advisory":"GHSA-gfpf-r66f-5mh2","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-05T18:29:01.280095Z","id":"CVE-2025-66577","options":[{"Exploitation":"poc"},{"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":"2025-12-05T18:29:10.535Z"}}]}}