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Security Bulletin: IBM App Connect Enterprise Certified Container IntegrationRuntime and IntegrationServer operands are vulnerable to loss of confidentiality (CVE-2026-22817, CVE-2026-22818)

Security Bulletin


Summary

IBM App Connect Enterprise Certified Container IntegrationRuntime and IntegrationServer operands are vulnerable to loss of confidentiality due to Node.js module hono. This bulletin provides patch information to address the reported vulnerability in Node.js module hono (CVE-2026-22817, CVE-2026-22818)

Vulnerability Details

CVEID:   CVE-2026-22817
DESCRIPTION:   Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.11.4, there is a flaw in Hono’s JWK/JWKS JWT verification middleware allowed the JWT header’s alg value to influence signature verification when the selected JWK did not explicitly specify an algorithm. This could enable JWT algorithm confusion and, in certain configurations, allow forged tokens to be accepted. As part of this fix, the JWT middleware now requires the alg option to be explicitly specified. This prevents algorithm confusion by ensuring that the verification algorithm is not derived from untrusted JWT header values. This vulnerability is fixed in 4.11.4.
CWE:   CWE-347: Improper Verification of Cryptographic Signature
CVSS Source:   NVD
CVSS Base score:   6.5
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID:   CVE-2026-22818
DESCRIPTION:   Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.11.4, there is a flaw in Hono’s JWK/JWKS JWT verification middleware allowed the algorithm specified in the JWT header to influence signature verification when the selected JWK did not explicitly define an algorithm. This could enable JWT algorithm confusion and, in certain configurations, allow forged tokens to be accepted. The JWK/JWKS JWT verification middleware has been updated to require an explicit allowlist of asymmetric algorithms when verifying tokens. The middleware no longer derives the verification algorithm from untrusted JWT header values. This vulnerability is fixed in 4.11.4.
CWE:   CWE-347: Improper Verification of Cryptographic Signature
CVSS Source:   NVD
CVSS Base score:   6.5
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM App Connect Operator

CD: 12.19.0

IBM App Connect Enterprise
Certified Containers Operands

CD: 13.0.6.0-r1

Remediation/Fixes

IBM strongly suggests the following:

App Connect Enterprise Certified Container up to 12.19.0 (Continuous Delivery)

Upgrade to App Connect Enterprise Certified Container Operator version 12.20.0 or higher, and ensure that all IntegrationServer and IntegrationRuntime components are at 13.0.6.1-r1 or higher.  Documentation on the upgrade process is available at https://www.ibm.com/docs/en/app-connect/13.0?topic=releases-upgrading-operator

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

05 Feb 2026: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
05 February 2026

Initial Publish date:
05 February 2026

UID

ibm17259747