Auth bypass in Apache Shiro
CVE-2021-41303
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0.
Vulnerability class: Broken Authentication
EPSS: 0.767 (99.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Shiro
- Apache Software Foundation Shiro — versions Apache Shiro
- Oracle Financial_services_crime_and_compliance_management_studio — versions 8.0.8.2.0, 8.0.8.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41303?
- CVE-2021-41303 is a critical-severity vulnerability in Apache Shiro, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-09-17.
- How severe is CVE-2021-41303?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-41303 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.