CVE-2025-55702
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 c…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | 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 |
Versions were read from the advisory text. No structured product data has been published for this record yet.