| Name | CVE-2026-101356 |
| Description | Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1151847, 1151848 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| tomcat10 (PTS) | bookworm | 10.1.55-1~deb12u1 | vulnerable |
| bookworm (security) | 10.1.60-1~deb12u1 | vulnerable | |
| trixie (security), trixie | 10.1.55-1~deb13u1 | vulnerable | |
| forky, sid | 10.1.60-1 | vulnerable | |
| tomcat11 (PTS) | trixie (security), trixie | 11.0.22-1~deb13u1 | vulnerable |
| forky, sid | 11.0.24-1 | vulnerable | |
| tomcat9 (PTS) | bookworm | 9.0.70-2 | fixed |
| trixie | 9.0.95-1 | fixed | |
| forky, sid | 9.0.122-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| tomcat10 | source | (unstable) | (unfixed) | 1151847 | ||
| tomcat11 | source | (unstable) | (unfixed) | 1151848 | ||
| tomcat9 | source | (unstable) | 9.0.70-2 |
Starting with 9.0.70-2 src:tomcat9 no longer ships the server stack, using that as the fixed version
https://github.com/apache/tomcat/commit/1dc6aa151b3b99b32ac9ae7c60e41c326063321b (11.0.27)
https://github.com/apache/tomcat/commit/6c7da60893bd186d6cb2df7330299d7e70e68279 (10.1.61)
https://github.com/apache/tomcat/commit/4b1eb9a1664b10471f5740279d9f2e2259c5d108 (9.0.123)