{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57834","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-06-25T17:14:10.028Z","datePublished":"2026-07-29T07:25:49.384Z","dateUpdated":"2026-07-30T03:55:16.378Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Apache Traffic Server","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"8.1.9","status":"affected","version":"8.0.0","versionType":"semver"},{"lessThanOrEqual":"9.2.14","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThanOrEqual":"10.1.3","status":"affected","version":"10.0.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"reporter","value":"Haruki Oyama"},{"lang":"en","type":"reporter","value":"Katsutoshi Ikenoya (LY Corporation)"},{"lang":"en","type":"reporter","value":"Apache Community"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Apache Traffic Server allows request smuggling if chunked messages are malformed.</p><p>This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.</p><p>Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.</p>"}],"value":"Apache Traffic Server allows request smuggling if chunked messages are malformed.\n\nThis issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.\n\nUsers are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue."}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"CWE-444 Inconsistent Interpretation of HTTP Requests","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-07-29T07:25:49.384Z"},"references":[{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d"}],"source":{"discovery":"UNKNOWN"},"title":"Apache Traffic Server: Malformed chunked message body allows request smuggling","x_generator":{"engine":"scripts/cve_render.py"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-57834"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-30T03:55:16.378Z"}}]}}