TI-2026-19259 Aliases CVE-2026-23903 GHSA-c244-p6m5-vqj6

Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems

LOW 30CWE-289Published 2026-02-09 · Updated 2026-08-20

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · None · None
Fix status: Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00397 34th percentileScored 2026-11-07

Fix Partial Apache Shiro (Apache Software Foundation): 2.0.7org.apache.shiro:shiro-spring (Maven): 2.1.0Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache Shiro	before 2.0.7	2.0.7	Patch available	CNA
—	org.apache.shiro:shiro-spring (Maven)	before 2.1.0	2.1.0	Patch available	GHSA-c244-p6m5-vqj6

Apache Shiro VendorApache Affected before 2.0.7 Fixed in 2.0.7 Patch available CNA
org.apache.shiro:shiro-spring (Maven) Vendor— Affected before 2.1.0 Fixed in 2.1.0 Patch available GHSA-c244-p6m5-vqj6

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:shiro::::::::	before 2.0.7	Vulnerable	Apache

cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:* Versions before 2.0.7 Vulnerable ·Apache

Remediation

Fix · CNA Apache Shiro (Apache Software Foundation) Fixed in 2.0.7
Fix · GHSA-c244-p6m5-vqj6 org.apache.shiro:shiro-spring (Maven) Fixed in 2.1.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Fuse 7	Affected	No fix yet: Fix deferred
Red Hat JBoss Enterprise Application Platform 8	Affected	No fix yet: Fix deferred
Red Hat JBoss Enterprise Application Platform Expansion Pack	Affected	No fix yet: Fix deferred
Red Hat build of Apache Camel for Spring Boot 4	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-23903
2026-10-03 Alias added: GHSA-c244-p6m5-vqj6

References

Advisory 3

Other 2

TI-2016-03813 Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember… KEVCVSS 3.1CRITICAL 9.8
TI-2020-13272 Improper authentication in Apache Shiro CVSS 3.1CRITICAL 9.8
TI-2021-18132 Improper authentication in Apache Shiro CVSS 3.1CRITICAL 9.8
TI-2022-14167 Authentication bypass in Apache Shiro CVSS 3.1CRITICAL 9.8
TI-2020-09649 Improper authentication in Apache Shiro CVSS 3.1CRITICAL 9.8
TI-2020-10910 Apache Shiro before 1.6.0, when using Apache Shiro, a specially crafted HTTP request may cause an authentication bypass. CVSS 3.1HIGH 7.5

See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences