SB2026051421 - XPath injection in BIG-IP Configuration utility
Published: May 14, 2026
Security Bulletin ID
SB2026051421
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) XPath Injection (CVE-ID: CVE-2026-40699)
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper neutralization of data within XPath expressions in the Configuration utility when handling requests to undisclosed pages. A remote user can send crafted requests to disclose sensitive information.
This is a control plane issue only and requires network access to the Configuration utility through the BIG-IP management port or a self-IP address.
Remediation
Install update from vendor's website.