{"id":"CVE-2026-54399","state":"PUBLISHED","title":"Apache HttpComponents Core: Unbounded HTTP Header/Line Length in Default Configuration","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","publishedAt":"2026-07-01T17:02:21.778Z","updatedAt":"2026-07-01T17:36:47.358Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache HttpComponents Core"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache HttpComponents Core","packageName":"org.apache.httpcomponents.core5:httpcore5","defaultStatus":"unaffected","versions":[{"version":"5.5-alpha","status":"affected","lessThanOrEqual":"5.5-beta1","versionType":"maven"},{"version":"5.0-alpha","status":"affected","lessThanOrEqual":"5.4.2","versionType":"maven"}],"collectionURL":"https://repo.maven.apache.org/maven2/"}],"references":["https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy","http://www.openwall.com/lists/oss-security/2026/07/01/4"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54399.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54399","state":"PUBLISHED","datePublished":"2026-07-01T17:02:21.778Z","dateUpdated":"2026-07-01T17:36:47.358Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-06-13T10:04:54.084Z"},"containers":{"cna":{"title":"Apache HttpComponents Core: Unbounded HTTP Header/Line Length in Default Configuration","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"}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache HttpComponents Core","packageName":"org.apache.httpcomponents.core5:httpcore5","defaultStatus":"unaffected","versions":[{"version":"5.5-alpha","status":"affected","lessThanOrEqual":"5.5-beta1","versionType":"maven"},{"version":"5.0-alpha","status":"affected","lessThanOrEqual":"5.4.2","versionType":"maven"}],"collectionURL":"https://repo.maven.apache.org/maven2/"}],"references":[{"url":"https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"important"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-07-01T17:06:01.449Z"},"credits":[{"lang":"en","type":"finder","value":"Henry Huang <zhuang3@paypal.com>"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-01T17:34:34.579868Z","id":"CVE-2026-54399","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-01T17:34:49.559Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/07/01/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-01T17:36:47.358Z"}}]}}}