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CVE-2026-77756 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused…
Description
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Tomcat 11.0 | 11.0.0-M1 → 11.0.25 | No fix stated |
| Apache Tomcat 10.1 | 10.1.0-M1 → 10.1.59 | No fix stated |
| Apache Tomcat 9.0 | 9.0.47 → 9.0.121 | No fix stated |
| Apache Tomcat 8.5 | 8.5.67 → 8.5.100 | No fix stated |
References
- lists.apache.org lists.apache.org
Timeline
- Published
- Last modified
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