PatchSiren cyber security CVE debrief

CVE-2026-4820 IBM CVE debrief

IBM Maximo Application Suite 9.1, 9.0, 8.11, and 8.10 does not set the 'secure' attribute on authorization tokens or session cookies. An unauthenticated attacker can steal cookies by directing users to a malicious http:// link and snooping user traffic. This issue was fixed in versions 9.1.8, 9.0.19, 8.11.30, and 8.10.33. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 4.3, indicating a medium severity. Users of affected versions should apply the necessary updates to prevent potential attacks.

Vendor: IBM
Product: Maximo Application Suite
CVSS: MEDIUM 4.3
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-04-07
Original CVE updated: 2026-04-07
Advisory published: 2026-04-07
Advisory updated: 2026-04-07

Who should care

Organizations using IBM Maximo Application Suite versions 9.1, 9.0, 8.11, and 8.10 should prioritize updating to the fixed versions to protect against potential cookie theft attacks. This is particularly important for environments where unauthorized access could lead to significant security breaches. IT administrators and security teams responsible for managing and securing IBM Maximo Application Suite installations should take immediate action.

Technical summary

The vulnerability in IBM Maximo Application Suite arises from the lack of the 'secure' attribute on authorization tokens and session cookies. This attribute is crucial as it instructs web browsers to only transmit these sensitive pieces of information over secure (HTTPS) connections, preventing attackers from intercepting them over unsecured (HTTP) connections. Without this attribute, an attacker can easily redirect users to a malicious website via an HTTP link, allowing them to snoop user traffic and steal sensitive cookies. This can lead to unauthorized access and potentially severe security breaches.

Defensive priority

Apply the necessary updates to IBM Maximo Application Suite to set the 'secure' attribute on authorization tokens and session cookies. Ensure that all affected systems are updated to versions 9.1.8, 9.0.19, 8.11.30, or 8.10.33, or later, as soon as possible.

Recommended defensive actions

Update IBM Maximo Application Suite to version 9.1.8, 9.0.19, 8.11.30, or 8.10.33, or later.
Ensure all communications with the application suite use secure (HTTPS) connections.
Monitor for and restrict unauthorized access attempts to the application suite.
Implement additional security measures such as multi-factor authentication where possible.
Regularly review and update security configurations and patches for all systems.

Evidence notes

The information provided is based on the CVE-2026-4820 record and related sources. The CVE score is 4.3, indicating a medium severity vulnerability. The vulnerability was publicly disclosed on April 7, 2026. Fixes are available in versions 9.1.8, 9.0.19, 8.11.30, and 8.10.33 of IBM Maximo Application Suite.

Official resources

This article was generated with AI assistance based on the supplied source corpus and is intended for informational purposes only. It is not an official statement from IBM or any other entity involved.