CVE-2026-84115
HighCVSS 8.3Summary
A vulnerability in Cleo Harmony up to version 5.8.1.10 affects an unknown function in the /api/connections file of the JWT Refresh Token Handler component. Manipulation of the Bearer argument leads to improper privilege management. The attack can be carried out remotely, and the exploit has been made public.
Risk Assessment
The organization may be exposed to unauthorized access or privilege escalation in Cleo Harmony, potentially leading to confidentiality and integrity breaches.
Recommendation
It is recommended to immediately upgrade Cleo Harmony to version 5.8.1.11 or later, which contains the fix.
Other vulnerabilities in Cleo Harmony
See all- CVE-2026-84114Medium
A vulnerability has been found in Cleo Harmony up to 5.8.1.10. Impacted is the function LocalUserUtil.getNativeUserByAssertions of the component SAML Authentication. Such manipulation of the argument Email leads to improper authentication. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 5.8.1.11 is recommended to address this issue. Upgrading the affected component is recommended.
- CVE-2024-55956CriticalActively exploited
In Cleo Harmony, VLTrader, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary Bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.
Original NVD description (English source)
A vulnerability was found in Cleo Harmony up to 5.8.1.10. The affected element is an unknown function of the file /api/connections of the component JWT Refresh Token Handler. Performing a manipulation of the argument Bearer results in improper privilege management. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 5.8.1.11 is sufficient to fix this issue. It is recommended to upgrade the affected component.