Platform
other
Component
cortex-xsoar
Fixed in
1.5.52
CVE-2026-0234 describes a critical signature verification bypass vulnerability discovered in the Cortex XSOAR and Cortex XSIAM Microsoft Teams Marketplace Integration. This flaw allows an unauthenticated user to gain unauthorized access and modify protected resources within the system. The vulnerability impacts versions 1.5.0 through 1.5.52, and a fix is available in version 1.5.52.
The impact of CVE-2026-0234 is significant due to the potential for unauthorized access and modification of sensitive data and configurations within the Cortex XSOAR/XSIAM environment. An attacker could leverage this vulnerability to escalate privileges, compromise incident response workflows, or even gain control over the entire security orchestration platform. Successful exploitation could lead to data breaches, disruption of security operations, and reputational damage. The lack of authentication required for exploitation amplifies the risk, as any user with access to the Microsoft Teams integration could potentially exploit the vulnerability.
CVE-2026-0234 was publicly disclosed on 2026-04-13. As of this date, there are no publicly available proof-of-concept exploits. The EPSS score is pending evaluation, but the vulnerability's severity and ease of exploitation suggest a potential for active exploitation. Monitor security advisories and threat intelligence feeds for any indications of exploitation campaigns targeting Cortex XSOAR deployments.
Exploit Status
EPSS
0.02% (6% percentile)
CISA SSVC
The primary mitigation for CVE-2026-0234 is to immediately upgrade the Cortex XSOAR Microsoft Teams Marketplace Integration to version 1.5.52 or later. If upgrading is not immediately feasible due to compatibility concerns or testing requirements, consider temporarily restricting access to the Microsoft Teams integration to authorized users only. Monitor Microsoft Teams activity logs for any suspicious behavior related to the integration. While a direct WAF rule is unlikely to be effective, implementing stricter access controls and multi-factor authentication for the XSOAR platform itself can reduce the overall attack surface. After upgrading, verify the integrity of the integration by reviewing access logs and confirming that only authorized users can access and modify protected resources.
Update the Microsoft Teams integration in Cortex XSOAR to version 1.5.52 or later to mitigate the improper cryptographic signature verification vulnerability. This update corrects the flaw that allows unauthenticated users to access and modify protected resources.
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CVE-2026-0234 is a vulnerability in the Cortex XSOAR Microsoft Teams Marketplace Integration allowing unauthenticated access and modification of protected resources due to a flaw in cryptographic signature verification.
If you are using Cortex XSOAR Microsoft Teams Marketplace Integration versions 1.5.0 through 1.5.52, you are potentially affected by this vulnerability.
Upgrade the Cortex XSOAR Microsoft Teams Marketplace Integration to version 1.5.52 or later to remediate the vulnerability. Consider restricting access to the integration until the upgrade is complete.
As of the public disclosure date, there are no known active exploitation campaigns, but the vulnerability's severity warrants careful monitoring.
Refer to the Cortex XSOAR security advisory page for the latest information and official guidance regarding CVE-2026-0234.
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