What is CVE-2026-44598?

CVE-2026-44598 is a medium-severity vulnerability in Apache Shiro, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.4/10. Published 2026-05-25.

How severe is CVE-2026-44598?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Open Redirect in Apache Shiro

CVE-2026-44598

With valid login credentials, URL Redirection to Untrusted Site ('Open Redirect'), Server-Side Request Forgery (SSRF) vulnerability in Apache Shiro. This issue affects Apache Shiro from 2.0-alpha to 2.1.0, and 3.0.0-alpha-1, only when…

Vulnerability class: Open Redirect

EPSS: 0.001 (30.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Apache Shiro — versions 3.0.0
Apache Software Foundation Shiro Jakarta Ee Module — versions 2.0.0-alpha-0, 3.0.0-alpha-0

Weakness classification (CWE)

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-44598?: CVE-2026-44598 is a medium-severity vulnerability in Apache Shiro, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.4/10. Published 2026-05-25.
How severe is CVE-2026-44598?: Medium severity. CVSS v3 base score is 5.4 out of 10.