CVE-2026-14999
Received Received - Intake

Authentication Bypass via Forged JSON Web Signatures in IBM DataPower Gateway

Publication date: 2026-10-08

Last updated on: 2026-10-08

Assigner: IBM Corporation

Description
IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to bypass authentication by forging valid JSON Web Signatures due to improper verification of cryptographic signatures.

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Meta Information

Published
2026-10-08
Last Modified
2026-10-08
Generated
2026-10-08
AI Q&A
2026-10-08
EPSS Evaluated
N/A
NVD
CVE-2026-14999
EUVD
EUVD-2026-94988

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
IBM DataPower Gateway 10.6CD 10.6.1
IBM DataPower Gateway 10.6.0 10.6.0.0
IBM DataPower Gateway 11.0.0 11.0.0.0
IBM DataPower Gateway 10.5.0 10.5.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-347 The product does not verify, or incorrectly verifies, the cryptographic signature for data.

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Executive Summary

This vulnerability allows a remote attacker to bypass authentication by forging valid JSON Web Signatures. It occurs due to improper verification of cryptographic signatures in IBM DataPower Gateway versions 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2.

Detection Guidance

This vulnerability involves improper verification of JSON Web Signatures in IBM DataPower Gateway. To detect it, inspect network traffic for malformed or forged JWT tokens, particularly those with altered headers or payloads. Check DataPower logs for authentication bypass attempts or unusual access patterns. Use tools like tcpdump or Wireshark to capture and analyze traffic to DataPower endpoints.

Impact Analysis

An attacker could exploit this to gain unauthorized access to systems or data protected by IBM DataPower Gateway. This may lead to data breaches, unauthorized transactions, or manipulation of sensitive information.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other regulations by enabling unauthorized access to personal or sensitive data. Organizations may face legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Apply the latest IBM DataPower Gateway patches or updates to fix the improper JSON Web Signature verification issue. IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 are affected. Check IBM support for available fixes.

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