Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cleo | Harmony | 5.8.1.0, 5.8.1.1, 5.8.1.2, 5.8.1.3, 5.8.1.4, 5.8.1.5, 5.8.1.6, 5.8.1.7, 5.8.1.8, 5.8.1.9, 5.8.1.10 | 5.8.1.11 |
References
- VDB-397558 | Cleo Harmony JWT Refresh Token connections privileges management vdb-entry technical-description
- VDB-397558 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-84115 | CVE Analysis and Report third-party-advisory
- Submit #882468 | Cleo Harmony < 5.8.1.11 Privilege Escalation via Cross-Store Identity Lookup Confusion third-party-advisory
- https://support.cleo.com/hc/en-us/articles/30258468834583-Cleo-Harmony-5-8-1-Release-Notes#Version58111 broken-link patch