cve.bz

CVE-2026-43827

5.9 mediumEPSS 0.4%

Medium (5.9) in apache shiro. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in org.apache.shiro:shiro-core 2.2.0, 3.0.0-alpha-2.

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.

Severity

CVSS 4.0

5.9 medium
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

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-31)
CWE
CWE-384
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-fcvm-3cpj-f9qxMavenorg.apache.shiro:shiro-core>=1.0.0-incubating <2.2.02.2.0
GHSA-fcvm-3cpj-f9qxMavenorg.apache.shiro:shiro-core>=3.0.0-alpha-1 <3.0.0-alpha-23.0.0-alpha-2

References

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