| Name | CVE-2026-65927 |
| Description | Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121 which fix 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) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| tomcat10 (PTS) | bookworm, bookworm (security) | 10.1.55-1~deb12u1 | vulnerable |
| trixie (security), trixie | 10.1.55-1~deb13u1 | vulnerable | |
| forky, sid | 10.1.55-1 | vulnerable | |
| tomcat11 (PTS) | trixie (security), trixie | 11.0.22-1~deb13u1 | vulnerable |
| forky, sid | 11.0.24-1 | vulnerable | |
| tomcat9 (PTS) | bullseye | 9.0.43-2~deb11u10 | vulnerable |
| bullseye (security) | 9.0.118-0+deb11u1 | fixed | |
| bookworm | 9.0.70-2 | fixed | |
| trixie | 9.0.95-1 | fixed | |
| forky, sid | 9.0.118-1 | 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) | |||
| tomcat11 | source | (unstable) | (unfixed) | |||
| 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/bce83410ffb1542752d52b536257e81a5c8dfcb8 (11.0.25)
https://github.com/apache/tomcat/commit/b80929d65be774dc90e378acdda2d16949d1e5f3 (11.0.25)
https://github.com/apache/tomcat/commit/3097902177a041a93476a036b9c8419b25d5cc0d (10.1.58)
https://github.com/apache/tomcat/commit/7d2ae3952a39db5790dcfd36e5d79c75570a20ee (10.1.58)
https://github.com/apache/tomcat/commit/ffa86dc683645f784e36ec87236d51ea866dcadf (9.0.121)
https://github.com/apache/tomcat/commit/b477537e68acfcaa7220f90b512bf8a72bf237dc (9.0.121)