{"cvss":7.5,"datePublished":"2026-07-01T17:16:36.357","dateUpdated":"2026-10-25T17:10:00.197","description":"Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length","id":"CVE-2026-54399","raw":{"affected":[{"affectedData":[{"collectionURL":"https://repo.maven.apache.org/maven2/","defaultStatus":"unaffected","packageName":"org.apache.httpcomponents.core5:httpcore5","product":"Apache HttpComponents Core","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"5.5-beta1","status":"affected","version":"5.5-alpha","versionType":"maven"},{"lessThanOrEqual":"5.4.2","status":"affected","version":"5.0-alpha","versionType":"maven"}]}],"source":"security@apache.org"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:apache:httpcomponents_core:*:*:*:*:*:*:*:*","matchCriteriaId":"A8EEC5B5-1DF7-46C6-BDF1-682D12E33F04","versionEndIncluding":"5.4.2","versionStartIncluding":"5.0","vulnerable":true},{"criteria":"cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1:*:*:*:*:*:*","matchCriteriaId":"3A6F1338-5376-4581-AF9B-202B62133A9F","vulnerable":true},{"criteria":"cpe:2.3:a:apache:httpcomponents_core:5.5:beta1:*:*:*:*:*:*","matchCriteriaId":"860D474E-62CA-463F-AD9A-B7C44C148CD2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length"},{"lang":"es","value":"Vulnerabilidad de Consumo de Recursos No Controlado en el analizador de mensajes HTTP/1.1 en Apache HttpComponents Core (5.4.2 y anteriores, 5.5-beta1 y anteriores) permite a un atacante remoto causar una denegación de servicio mediante el agotamiento de la memoria al enviar mensajes con un número excesivo de encabezados / una longitud de encabezado excesiva."}],"id":"CVE-2026-54399","lastModified":"2026-10-25T17:10:00.197","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-54399","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-07-01T17:34:34.579868Z","version":"2.0.3"}}]},"published":"2026-07-01T17:16:36.357","references":[{"source":"security@apache.org","tags":["Mailing List","Vendor Advisory"],"url":"https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://www.openwall.com/lists/oss-security/2026/07/01/4"}],"sourceIdentifier":"security@apache.org","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"security@apache.org","type":"Secondary"},{"description":[{"lang":"en","value":"NVD-CWE-noinfo"}],"source":"nvd@nist.gov","type":"Primary"}]},"severity":"HIGH","source":"nvd","title":"Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 ..."}