SB2026082595 - Open redirect in Apache Shiro

Description

This security bulletin contains information about 1 vulnerability.

1) Open redirect (CVE-ID: CVE-2026-48589)

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to redirect users to an arbitrary site.

The vulnerability exists due to improper input validation in the post-login redirect flow of the shiro-jakarta-ee integration module when processing the HTTP Referer header. A remote attacker can supply a crafted Referer header to redirect users to an arbitrary site.

The issue occurs only in applications using the Jakarta EE integration module.

Remediation

Install update from vendor's website.

References

• https://lists.apache.org/api/email.lua?id=9h1wjzjvkcf5qg04jjt03l67g02rsok1
• https://shiro.apache.org/security-reports.html#cve_2026_48589