SB2026102176 - Multiple vulnerabilities in Platform Navigator and Automation Assets in IBM Integration
Published: October 21, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2026-18540)
CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause downstream response splitting or desynchronization.
The vulnerability exists due to inconsistent interpretation of HTTP response framing in the retry interceptor when resuming a partial response from an attacker-controlled upstream. A remote attacker can cause resumed response bytes to be appended to a partially delivered response body while its original status and headers are retained to cause downstream response splitting or desynchronization.
Exploitation requires interceptors.retry() to be enabled and a downstream forwarder that does not recalculate Content-Length.
2) Uncaught Exception (CVE-ID: CVE-2026-19534)
CWE-ID: CWE-248 - Uncaught Exception
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an uncaught exception in the undici WebSocket client opening handshake when processing a server response containing an unrequested Sec-WebSocket-Protocol header. A remote attacker can send a crafted WebSocket handshake response to cause a denial of service.
Exploitation requires an application to open a WebSocket connection to an attacker-controlled or compromised server, or to use a plaintext ws:// connection subject to a machine-in-the-middle.
3) Uncaught Exception (CVE-ID: CVE-2026-85024)
CWE-ID: CWE-248 - Uncaught Exception
CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an uncaught exception in the WebSocket permessage-deflate decompression handler when processing a compressed WebSocket message that exceeds the decompressed-payload size limit and contains a malformed DEFLATE block. A remote attacker can send a specially crafted compressed WebSocket message to cause a denial of service.
The internal InflateRaw error listener is removed while the stream continues running, causing an unhandled Z_DATA_ERROR to terminate the Node.js process.
Remediation
Install update from vendor's website.