Authentication Bypass Affecting apache-activemq-6.2 package, versions <6.2.8-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-APACHEACTIVEMQ62-18311848
- published26 Jul 2026
- disclosed9 Feb 2026
Introduced: 9 Feb 2026
CVE-2026-23903 (opens in a new tab)How to fix?
Upgrade Minimos:latest apache-activemq-6.2 to version 6.2.8-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream apache-activemq-6.2 package and not the apache-activemq-6.2 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
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 2.0.7 and later has a new parameters to remediate this issue shiro.ini: filterChainResolver.caseInsensitive = true application.propertie: shiro.caseInsensitive=true
Shiro 3.0.0 and later (upcoming) makes this the default.
References
- https://www.cve.org/CVERecord?id=CVE-2026-23903
- https://github.com/advisories/GHSA-c244-p6m5-vqj6
- https://osv.dev/vulnerability/MINI-r3qx-8rf6-h35p
- https://osv.dev/vulnerability/CVE-2026-23903
- https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k
- http://www.openwall.com/lists/oss-security/2026/02/08/1