SB20261007209 - Multiple vulnerabilities in IBM SPSS Modeler
Published: October 7, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error (CVE-ID: CVE-2026-6790)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass host-based access controls and interfere with hostname-based security decisions.
The vulnerability exists due to improper input validation in HTTP/2 and HTTP/3 server-side request handling when processing requests with mismatched :authority and Host values. A remote attacker can send a specially crafted request containing conflicting host identities to bypass host-based access controls and interfere with hostname-based security decisions.
Different layers may interpret different host values from the same request, which can affect virtual host isolation, multi-tenant routing, redirect or callback URL construction, proxy trust chains, and logging.
2) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2026-19203)
CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
CVSSv4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to inconsistent interpretation of HTTP requests in the HTTP chunk extension parser when processing a crafted chunked HTTP request containing a line feed in a chunk extension. A remote attacker can send a specially crafted chunked HTTP request to perform HTTP request smuggling attacks.
RFC7230 and RFC2616 compliance modes permit the line-feed condition.
Remediation
Install update from vendor's website.