{"id":"CVE-2026-111816","revision":null,"records":[{"revision":"25f6bd4cbda641afa28294c1f9c341d8","observedAt":"2026-10-23T22:48:20.692+00:00","statement":{"source":"cve-program","id":"CVE-2026-111816","aliases":[],"title":"Apache Traffic Server: A malformed 302 response bypasses parse-error rejection through the Transfer-Encoding: chunked carve-out","description":"Apache Traffic Server forwarded a malformed 302 response that should have been rejected as a parse error, because the Transfer-Encoding: chunked carve-out bypassed the rejection path. A response that two peers can read differently is then stored and served, allowing cache poisoning and response-framing desync.\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.","state":0,"publishedAt":"2026-10-21T18:26:32.566+00:00","modifiedAt":"2026-10-23T21:22:57.204+00:00","affected":[{"ecosystem":"Vendor product","name":"Apache Traffic Server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Apache Software Foundation\",\n                    \"product\": \"Apache Traffic Server\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"8.0.0\",\n                            \"lessThanOrEqual\": \"8.1.11\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"9.0.0\",\n                            \"lessThanOrEqual\": \"9.2.15\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"10.0.0\",\n                            \"lessThanOrEqual\": \"10.1.4\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"10.2.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N","score":9.2,"severity":"CRITICAL"}],"references":["https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111816","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111816","identifiers":["CVE-2026-111816"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-10-26T14:35:48.1677058+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-26T14:35:48.1677058+00:00","lastSuccessAt":"2026-10-26T14:35:48.3524508+00:00","error":null,"lastVerifiedAt":"2026-10-26T14:35:48.3524813+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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