Is CVE-2026-44598 actively exploited?

No active exploitation of CVE-2026-44598 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44598 be exploited remotely?

Yes. CVE-2026-44598 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44598?

CVE-2026-44598 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-44598

CWE-601Published: May 25, 2026· Updated: May 28, 2026

5.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.6th

Official Description

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 using shiro-jakarta-ee integration module.

Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue by encrypting the cookie.

After successful login, Jakarta EE integration module uses shiroSavedRequest cookie to redirect to a particular web page after login.

This cookie was not validated, and can be forged to send a HTTP GET request from the server itself to an arbitrary URL from the cookie.

NVD Source

Technical Analysis

CVE-2026-44598 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.