CVE catalog
CVE-2026-23903
shiro: CVE-2026-23903
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
Authentication Bypass by Alternate Name vulnerability in Apache Shiro. This issue affects Apache Shiro: before 2.0.7. Users are recommended to upgrade to version 2.0.7, which fixes the issue. The issue only effects static files. If static files are served from a case-insensitive filesystem, such as default macOS setup, static files may be accessed by varying the case of the filename in the request. If only lower-case (common default) filters are present in Shiro, they may be bypassed this way. Shiro 2.1.0 and later has a new parameters to remediate this issue shiro.ini: filterChainResolver.caseInsensitive = true application.properties: shiro.caseInsensitive=true Shiro 3.0.0 and later makes this the default in shiro.ini-based configurations. Shiro 3.0.1 and later makes this the default in all configurations, including programmatic and Spring / Spring Boot.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | shiro | sid | 1.3.2-6 | vulnerable |
| Debian | shiro | forky | 1.3.2-6 | vulnerable |
| Debian | shiro | trixie | 1.3.2-6 | vulnerable |
| Debian | shiro | bookworm | 1.3.2-5 | vulnerable |
| Cpe | shiro | Not reported | 2.0.7 | fixed |
| Ubuntu | shiro | pro | 1.3.2-5 | vulnerable |
| Ubuntu | shiro | pro | 1.3.2-5ubuntu0.24.04.1~esm1 | vulnerable |
| Ubuntu | shiro | 20.04 | 1.3.2-4 | vulnerable |
| Ubuntu | shiro | 20.04 | 1.3.2-4ubuntu0.1 | vulnerable |
| Ubuntu | shiro | 20.04 | 1.3.2-4ubuntu0.2 | vulnerable |
| Ubuntu | shiro | 22.04 | 1.3.2-4 | vulnerable |
| Ubuntu | shiro | 22.04 | 1.3.2-5 | vulnerable |
| Ubuntu | shiro | 25.10 | 1.3.2-6ubuntu1 | vulnerable |
| Ubuntu | shiro | 26.10 | 1.3.2-6ubuntu2 | vulnerable |
| Ubuntu | shiro | 26.04 | 1.3.2-6ubuntu1 | vulnerable |
| Ubuntu | shiro | 26.04 | 1.3.2-6ubuntu2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | shiro | source | sid | (unfixed) | not yet assigned | Not reported | [1127942] |
| Debian | shiro | source | forky | (unfixed) | not yet assigned | Not reported | [1127942] |
| Debian | shiro | source | trixie | (unfixed) | not yet assigned | Not reported | [1127942] |
| Debian | shiro | source | bookworm | (unfixed) | not yet assigned | Not reported | [1127942] |
| Cpe | shiro | cpe | Not reported | 2.0.7 | Not reported | NVD-CVE-2026-23903 | Not reported |
Notes
[trixie] shiro: Minor issue [bookworm] shiro: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libshiro-java]Affected
Source package: [shiro]
Details (2)
1.3.2-5· all · bookwormAffected
dsa · shiro · debian · bookworm; dsa · shiro · debian · 12
1.3.2-5· all · bookwormAffected
dsa · shiro · debian · bookworm; dsa · shiro · debian · 12
[Debian 13 (Trixie)]
- [libshiro-java]Affected
Source package: [shiro]
Details (2)
1.3.2-6· all · trixieAffected
dsa · shiro · debian · 13
1.3.2-6· all · trixieAffected
dsa · shiro · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-23903]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-23903]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-23903]
- [https://security-tracker.debian.org/tracker/CVE-2026-23903]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23903.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1194.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]