CVE-2026-43827
6.5 · MEDIUMOverview
CVE-2026-43827 is a medium-severity vulnerability affecting apache shiro. It was published on May 25, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Default configurations of Apache Shiro have a session fixation vulnerability.
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, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.
Remediation
Check the references section for vendor advisories and patches from apache. Update shiro to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| apache | shiro | >= 0, < 2.1.1 | Affected |
Frequently Asked Questions
What is CVE-2026-43827?
CVE-2026-43827 is a medium-severity vulnerability affecting apache shiro. It was published on May 25, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2026-43827?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-43827?
Check the references section for vendor advisories and patches from apache. Update shiro to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-43827?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-43827 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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