CVE-2026-84114

Cleo Harmony SAML Authentication LocalUserUtil.getNativeUserByAssertions improper authentication

Assigner: VulDB
Reserved: 01.09.2026 Published: 01.09.2026 Updated: 01.09.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS 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
CVSS Score: 6.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS Score: 6.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.0

CVSS Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
CVSS Score: 6.5

Access Vector	Network	Confidentiality Impact	Partial
Access Complexity	Low	Integrity Impact	Partial
Authentication	Single	Availability Impact	Partial

CVSS 2.0

Product Status

Vendor	Cleo
Product	Harmony
Versions	Version 5.8.1.0 is affected Version 5.8.1.1 is affected Version 5.8.1.2 is affected Version 5.8.1.3 is affected Version 5.8.1.4 is affected Version 5.8.1.5 is affected Version 5.8.1.6 is affected Version 5.8.1.7 is affected Version 5.8.1.8 is affected Version 5.8.1.9 is affected Version 5.8.1.10 is affected Version 5.8.1.11 is unaffected

Vendor

Cleo

Product

Harmony

Versions

Version 5.8.1.0 is affected
Version 5.8.1.1 is affected
Version 5.8.1.2 is affected
Version 5.8.1.3 is affected
Version 5.8.1.4 is affected
Version 5.8.1.5 is affected
Version 5.8.1.6 is affected
Version 5.8.1.7 is affected
Version 5.8.1.8 is affected
Version 5.8.1.9 is affected
Version 5.8.1.10 is affected
Version 5.8.1.11 is unaffected

Credits

ilyass-armadin (VulDB User) reporter

References

Problem Types