CVE-2026-105459: Multiple Vulnerabilities in IBM API Connect

Q: Which IBM API Connect versions are affected?

IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are identified as affected.

Q: What access could an attacker gain?

An attacker could gain unauthorized access to an organization by joining it without a valid invitation.

Q: What does exploitation rely on?

Exploitation relies on a token being accepted even though its cryptographic signature is not fully verified.

Published Nov 5, 2026

Updated

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow an attacker to gain unauthorized access to an organization due to improper verification of a cryptographic signature. A token is accepted without its signature being fully verified, which could allow an attacker to join an organization without a valid invitation.

Other sources

IBM API Connect could allow an attacker to gain unauthorized access to an organization due to improper verification of a cryptographic signature. A token is accepted without its signature being fully verified, which could allow an attacker to join an organization without a valid invitation.

— IBM

Affected Software

1 affected component

IBM API Connect<=V10.0.8.0 - V10.0.8.12

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade IBM API Connect to a version that resolves this vulnerability.
Fixed in 10.0.8.13
Upgrade
Upgrade IBM API Connect to a version that resolves this vulnerability.
Fixed in 12.1.1.3

Event History

Nov 5, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Nov 7, 2026

CVE Published

via MITRE·04:31 AM

Data Sourced

via MITRE·04:31 AM

RemedyDescriptionSeverityWeakness

Data Sourced

via NVD·05:18 AM

DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

IBM-7295637

Frequently Asked Questions

Which IBM API Connect versions are affected?

IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are identified as affected.

What access could an attacker gain?

An attacker could gain unauthorized access to an organization by joining it without a valid invitation.

What does exploitation rely on?

Exploitation relies on a token being accepted even though its cryptographic signature is not fully verified.

CVE-2026-105459: Multiple Vulnerabilities in IBM API Connect

Other sources

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Which IBM API Connect versions are affected?

What access could an attacker gain?

What does exploitation rely on?

Company

Resources

Contact

Frequently Asked Questions

Which IBM API Connect versions are affected?

What access could an attacker gain?

What does exploitation rely on?