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Vulnerability · Published Sep 1, 2026 · Assigned by VulDB

CVE-2026-84114Cleo Harmony SAML Authentication LocalUserUtil.getNativeUserByAssertions improper authentication

Medium 6.3

In plain English

A medium-severity improper authentication in Harmony from Cleo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.5%top 60.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Cleo Harmony 5.8.1.05.8.1.15.8.1.25.8.1.35.8.1.45.8.1.55.8.1.65.8.1.7

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References