When a client sends a POST with Expect: 100-continue and the origin answers before reading the body, Apache Traffic Server parses the unread body left on the client connection as the next request. An attacker behind a front-end proxy that shares connections to Traffic Server can use this to smuggle requests past the front end and desynchronize responses for other users. 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. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 9
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-28 14:10
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 11:06
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-23 12:18
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 23:05
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 16:56
- StatusReceived → PublishedNVD modified 2026-10-21 18:24
- StatusPublished → ReceivedNVD modified 2026-10-21 19:16
- CVSS7.0 (v4.0, CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N) → 7.0 (v4.0, CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)NVD modified 2026-10-21 19:16
- First seenCVSS 7.0 · apache software foundationNVD modified 2026-10-21 18:24
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.