SB2026071486 - Missing TLS verification in Xen XAPI

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Main Vulnerability Database SB2026071486

SB2026071486 - Missing TLS verification in Xen XAPI

Published: July 14, 2026

Security Bulletin ID SB2026071486
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Certificate Validation (CVE-ID: CVE-2026-42491)

CWE-ID: CWE-295 - Improper Certificate Validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to intercept communications and disclose sensitive information or tamper with data in transit.

The vulnerability exists due to improper certificate validation in HTTP handlers in the XAPI C# and Powershell SDKs when opening a separate connection to the XAPI host. A remote attacker can perform a man-in-the-middle attack on network communication to intercept communications and disclose sensitive information or tamper with data in transit.

Successful exploitation may expose a session token and affect exported or imported disk images, host backups, RRD performance data, and patches or updates transferred over these connections.


Remediation

Install update from vendor's website.

References