Main Vulnerability Database SB2026100513

SB2026100513 - Multiple vulnerabilities in IBM webMethods API Gateway

Published: October 5, 2026

Security Bulletin ID SB2026100513

CSH Severity

High

Patch available

YES

Number of vulnerabilities 3

Exploitation vector Remote access

Highest impact Data manipulation

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 3 vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2026-69149)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Angular SSR. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

2) Origin validation error (CVE-ID: CVE-2026-50168)

CWE-ID: CWE-346 - Origin Validation Error

CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information and inject attacker-controlled content.

The vulnerability exists due to an origin validation error in the Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) when handling malformed request URLs. A remote attacker can send a request with a malformed Host header or absolute-form URI to disclose sensitive information and inject attacker-controlled content.

Exploitation requires server-side rendering with raw client URL inputs propagated to the rendering API, relative outbound HTTP requests, and the allowedHosts option enabled.

3) Cross-site scripting (CVE-ID: CVE-2026-50556)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

The vulnerability allows a remote attacker to execute arbitrary script in a user's browser context.

The vulnerability exists due to improper neutralization of input during web page generation in the domino serializer used by @angular/platform-server when serializing dynamic text content within tag and injected script to execute arbitrary script in a user's browser context.

User interaction is required to visit an SSR-rendered page that binds user-controlled data inside a