CVE-2026-84114

MEDIUM 6.3

Cleo Harmony SAML Authentication LocalUserUtil.getNativeUserByAssertions improper authentication

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-287
Vendor	cleo
Product	harmony
Published	Sep 1, 2026
Last Updated	Sep 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

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

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/397557 vuldb.com: https://vuldb.com/vuln/397557/cti vuldb.com: https://vuldb.com/cve/CVE-2026-84114 vuldb.com: https://vuldb.com/submit/882467 support.cleo.com: https://support.cleo.com/hc/en-us/articles/30258468834583-Cleo-Harmony-5-8-1-Release-Notes#Version58111

Credits

🔍 ilyass-armadin (VulDB User)