Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-44598

Severity CVSS v4.0:
MEDIUM
Type:
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Publication date:
25/05/2026
Last modified:
25/05/2026

Description

With valid login credentials, URL Redirection to Untrusted Site (&amp;#39;Open Redirect&amp;#39;), Server-Side Request Forgery (SSRF) vulnerability in Apache Shiro.<br /> <br /> <br /> <br /> <br /> 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.<br /> <br /> 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.<br /> <br /> After successful login, Jakarta EE integration module uses shiroSavedRequest cookie to redirect to a particular web page after login.<br /> 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.

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:A/V:D/RE:L/U:Green CVSS v4.0 Severity and Metrics:

Base Score: 5.10 MEDIUM
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:A/V:D/RE:L/U:Green

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): Passsive
Confidentiality (VC): Low
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): Low
Integrity (SI): None
Availability (SA): None
Safety (S): Negligible
Automatable (AU): Yes
Recovery (R): Automatic
Value Density (V): Diffuse
Vulnerability Response Effort (RE): Low
Provider Urgency (U): Green

Base Score 4.0
5.10
Severity 4.0
MEDIUM

References to Advisories, Solutions, and Tools