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.
Published: 2026-09-01
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
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.
Title Cleo Harmony JWT Refresh Token connections privileges management
First Time appeared Cleo
Cleo harmony
Weaknesses CWE-266
CWE-269
CPEs cpe:2.3:a:cleo:harmony:*:*:*:*:*:*:*:*
Vendors & Products Cleo
Cleo harmony
References
Metrics cvssV2_0

{'score': 7.5, 'vector': 'AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 8.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-09-01T15:58:24.289Z

Reserved: 2026-09-01T07:20:41.146Z

Link: CVE-2026-84115

cve-icon Vulnrichment

Updated: 2026-09-01T15:57:59.852Z

cve-icon NVD

Status : Deferred

Published: 2026-09-01T15:17:41.613

Modified: 2026-09-01T20:47:54.130

Link: CVE-2026-84115

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T16:30:17Z

Weaknesses
  • CWE-266

    Incorrect Privilege Assignment

  • CWE-269

    Improper Privilege Management