SB2026083130 - Unintended Proxy or Intermediary in Apache Shiro

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Main Vulnerability Database SB2026083130

SB2026083130 - Unintended Proxy or Intermediary in Apache Shiro

Published: August 31, 2026

Security Bulletin ID SB2026083130
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Unintended Proxy or Intermediary (CVE-ID: CVE-2026-58301)

CWE-ID: CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause the server to initiate a connection to an attacker-controlled URL and transmit attacker-controlled data.

The vulnerability exists due to improper access control in the Jakarta EE integration module when resubmitting a form via an HTTP POST request. A remote user can craft a specially crafted HTTP request to cause the server to initiate a connection to an attacker-controlled URL and transmit attacker-controlled data.

Only deployments that use the Jakarta EE integration module are vulnerable.


Remediation

Install update from vendor's website.

References