{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111805","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-10-16T20:16:14.017Z","datePublished":"2026-10-21T19:10:46.319Z","dateUpdated":"2026-10-23T21:22:42.961Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-10-21T19:10:46.319Z"},"title":"Apache Traffic Server: HTTP/2 Content-Length truncation lets a client trigger backend worker-pool exhaustion","problemTypes":[{"descriptions":[{"description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","cweId":"CWE-400","type":"CWE"}]}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache Traffic Server","versions":[{"status":"affected","version":"8.0.0","lessThanOrEqual":"8.1.11","versionType":"semver"},{"status":"affected","version":"9.0.0","lessThanOrEqual":"9.2.15","versionType":"semver"},{"status":"affected","version":"10.0.0","lessThanOrEqual":"10.1.4","versionType":"semver"},{"status":"affected","version":"10.2.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"value":"Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a truncated HTTP/2 Content-Length value.\n\n\n\nThis issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.\n\n\n\nUsers are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a truncated HTTP/2 Content-Length value.</p><p>This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.</p><p>Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.</p>"}]}],"references":[{"url":"https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"important"}},"scenarios":[{"lang":"en","value":"GENERAL"}]},{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.6,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"}},{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H"}}],"credits":[{"lang":"en","value":"matrix_cain (YakLang)","type":"reporter"},{"lang":"en","value":"Alieldeen Khaled Ali","type":"reporter"},{"lang":"en","value":"Jesse Yang","type":"reporter"},{"lang":"en","value":"Alex Williams (Pellera Technologies)","type":"reporter"},{"lang":"en","value":"VulnCheck","type":"coordinator"},{"lang":"en","value":"The ASF","type":"reporter"}],"x_generator":{"engine":"scripts/cve_render.py"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-23T20:52:16.544261Z","id":"CVE-2026-111805","options":[{"Exploitation":"none"},{"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":"2026-10-23T21:22:42.961Z"}}]}}