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CVE-2026-43827— Apache Shiro: Session fixation: new session is not created after login by default

Quick assessment

Affected
Apache Software Foundation Apache Shiro
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Shiro是美国阿帕奇（Apache）基金会的一套用于执行认证、授权、加密和会话管理的Java安全框架。 Apache Shiro 1.0版本至2.1.0版本和3.0.0-alpha-1版本存在安全漏洞，该漏洞源于会话固定问题，可能导致登录后现有会话未失效。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.53% · P43

Affected Version Matrix 2

VendorProduct Version RangeStatus
Apache Software Foundation Apache Shiro 1.0≤ 2.1.0 affected
3.0.0-alpha-0≤ 3.0.0-alpha-1 affected
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I. Basic Information for CVE-2026-43827

Vulnerability Information
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Vulnerability Title
Apache Shiro: Session fixation: new session is not created after login by default
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:U/RE:L/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Shiro 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Shiro是美国阿帕奇（Apache）基金会的一套用于执行认证、授权、加密和会话管理的Java安全框架。 Apache Shiro 1.0版本至2.1.0版本和3.0.0-alpha-1版本存在安全漏洞，该漏洞源于会话固定问题，可能导致登录后现有会话未失效。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Shiro 1.0 ~ 2.1.0 -

II. Public POCs for CVE-2026-43827

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III. Intelligence Information for CVE-2026-43827

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Vendor Advisories for CVE-2026-43827 (1)

Same Patch Batch · Apache Software Foundation · 2026-05-25 · 9 CVEs total

CVE-2026-48589 Apache Shiro: Jakarta EE open redirect via untrusted Referer in post-login redirect flow
CVE-2026-44598 Apache Shiro Jakarta EE module: Open redirect and SSRF (requires valid credentials)
CVE-2026-43828 Apache Shiro: Shiro's native session and rememberMe cookies do not have secure flag set by
CVE-2026-42797 Apache Syncope: JexlContextBuilder Information Disclosure
CVE-2026-42782 Apache Syncope: Post-auth RCE via Groovy static
CVE-2026-46745 Apache Airflow FAB provider: LDAP Filter Injection in FAB Auth Manager _search_ldap reacha
CVE-2026-45361 Apache Airflow Google provider: SSH host key verification disabled in ComputeEngineSSHHook
CVE-2026-45249 Apache ECharts: XSS in Lines series tooltip rendering

IV. Related Vulnerabilities

Same product: Apache Shiro
Same vendor: Apache Software Foundation
Same weakness: CWE-384

V. Comments for CVE-2026-43827

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