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CRITICAL severity

Improper Authorization in Apache ShiroGHSA-4cf5-xmhp-3xj7

CRITICAL

GHSA-4cf5-xmhp-3xj7 is a critical-severity (CVSS 9.8) CWE-863 vulnerability in org.apache.shiro:shiro-core. 4 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.apache.shiro:shiro-core — see the affected versions and patch details below.

Also known asCVE-2022-32532
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
4 known
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
25.5%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
8.48%38.6%68.8%98.9%80.9%25.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.apache.shiro:shiro-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Apache Shiro before 1.9.1, A RegexRequestMatcher can be misconfigured to be bypassed on some servlet containers. Applications using RegExPatternMatcher with . in the regular expression are possibly vulnerable to an authorization bypass.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.shiro:shiro-coreall versions1.9.1org.apache.shiro:shiro-core:1.9.1

Affected Products

1 product · 1 configurations
Application
shiroapache
< 1.9.1
range
Exploits & PoCs
4

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Apache Shiro before 1.9.1, A RegexRequestMatcher can be misconfigured to…

github.comGithubJun 2022

Report on github.com

github.comGithubJun 2022

Report on github.com

github.comGithubJun 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.shiro:shiro-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.shiro:shiro-core to 1.9.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4cf5-xmhp-3xj7 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Apache Shiro before 1.9.1, A RegexRequestMatcher can be misconfigured to be bypassed on some servlet containers. Applications using RegExPatternMatcher with `.` in the regular expression are possibly vulnerable to an authorization bypass.
O3 Security · Impact-Aware SCA

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Improper Authorization in Apache Shiro (Critical 9.8)