Vulnerability in Apache Shiro
CVE-2026-43828
Default configurations of Apache Shiro send sensitive cookies in HTTPS session without 'Secure' attribute. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, Shiro-native session manager, as well as Remember-Me manager sends JSESSIONID and rememberMe cookies without 'secure' attribute by default.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001
Affected products
- Apache Shiro — versions 3.0.0
- Apache Software Foundation Shiro — versions 1.0, 3.0.0-alpha-0
Weakness classification (CWE)
References
- shiro.apache.org/security-reports.html (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-43828?
- CVE-2026-43828 is a medium-severity vulnerability in Apache Shiro, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 6.5/10. Published 2026-05-25.
- How severe is CVE-2026-43828?
- Medium severity. CVSS v3 base score is 6.5 out of 10.