Cleo Harmony JWT Refresh Token connections privileges management (CVE-2026-84115) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-84115

Cleo Harmony JWT Refresh Token connections privileges management

Answer in brief

CVE-2026-84115 records a Unknown severity vulnerability in Cleo Harmony JWT Refresh Token connections privileges management. The current sources do not mark it as known exploited. The current feed maps Cleo/Harmony (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 1, 2026Updated Sep 1, 2026Source checked Sep 1, 2026First seen by HOL Sep 1, 2026Material review Sep 1, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Cleo/Harmony (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Cleo/Harmonygeneric	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	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Cleo/Harmony.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 1, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.