| Name | CVE-2026-43827 |
| Description | Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID. |
| 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 | 1140001 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| shiro (PTS) | bullseye | 1.3.2-4+deb11u1 | vulnerable |
| bookworm | 1.3.2-5 | vulnerable | |
| sid, trixie | 1.3.2-6 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| shiro | source | (unstable) | (unfixed) | 1140001 |
[trixie] - shiro <no-dsa> (Minor issue)
[bookworm] - shiro <no-dsa> (Minor issue)
[bullseye] - shiro <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2026/05/25/6