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CVE-2026-84115 is an improper privilege-management vulnerability in Cleo Harmony's JWT refresh-token handling. Cleo Harmony versions through 5.8.1.10 improperly process a manipulated Bearer authorization argument during JWT refresh processing, allowing a remote requester to obtain privileges beyond those intended for its session. The issue is reported to have a public proof of concept.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An improper privilege-management vulnerability (CVSS v3.x 8.3) in Cleo Harmony's JWT token-refresh handling for the /api/connections endpoint. A remote attacker could manipulate the Bearer parameter in crafted requests to bypass security mechanisms and elevate privileges.
A critical remotely exploitable improper privilege-management vulnerability in Cleo Harmony's JWT Refresh Token Handler, affecting the /api/connections endpoint. Manipulating HTTP Bearer-token arguments may bypass intended access controls and permit unauthorized elevated access.
A high-severity remote privilege-escalation vulnerability in Cleo Harmony's JWT Refresh Token Handler. Manipulated Bearer tokens sent to the /api/connections endpoint can result in improperly granted elevated permissions.
A high-severity remote privilege-escalation vulnerability in Cleo Harmony's JWT Refresh Token Handler. Manipulated Bearer tokens sent to the /api/connections endpoint can improperly receive elevated permissions.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.