This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-77756 →
Categories
DEBIAN-CVE-2026-77756

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-enco...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13 tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14 tomcat10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.1.60-1"}]}]
Debian:13 tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14 tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:12 tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]
Debian:13 tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]
Debian:14 tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}]

References

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