SB2026012866 - Red Hat Enterprise Linux 8 update for spice-client-win
Published: January 28, 2026
Security Bulletin ID
SB2026012866
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2025-14523)
The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests. libsoup accepts duplicate Host: headers and implements a last-value-wins policy when soup_message_headers_get_one[_common] is used to construct the request URI, while many proxies and routers use the first Host: header for routing. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.
Remediation
Install update from vendor's website.