{"api_version":"1","generated_at":"2026-04-21T08:57:14+00:00","cve":"CVE-2023-0836","urls":{"html":"https://cve.report/CVE-2023-0836","api":"https://cve.report/api/cve/CVE-2023-0836.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-0836","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-0836"},"summary":{"title":"CVE-2023-0836","description":"An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. 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There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way."}]}},"nvd":{"publishedDate":"2023-03-29 21:15:00","lastModifiedDate":"2023-11-07 04:01:00","problem_types":["CWE-459"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:2.7.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.0","versionEndIncluding":"2.6.8","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.5.0","versionEndIncluding":"2.5.11","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.4.0","versionEndIncluding":"2.4.21","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:2.3.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.2.0","versionEndExcluding":"2.2.27","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:haproxy:haproxy:2.1.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}