Cleo Harmony up to 5.8.1.10 SAML Authentication LocalUserUtil.getNativeUserByAssertions Email improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k1.70+

Summaryinfo

A vulnerability classified as critical has been found in Cleo Harmony up to 5.8.1.10. The affected element is the function LocalUserUtil.getNativeUserByAssertions of the component SAML Authentication. Performing a manipulation of the argument Email results in improper authentication. This vulnerability is reported as CVE-2026-84114. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Cleo Harmony up to 5.8.1.10. This affects the function LocalUserUtil.getNativeUserByAssertions of the component SAML Authentication. The manipulation of the argument Email with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at support.cleo.com. This vulnerability is uniquely identified as CVE-2026-84114. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known.

The exploit is shared for download at support.cleo.com. It is declared as proof-of-concept.

Upgrading to version 5.8.1.11 eliminates this vulnerability. The upgrade is hosted for download at support.cleo.com.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Harmony 5.8.1.11

Timelineinfo

09/01/2026 Advisory disclosed
09/01/2026 +0 days VulDB entry created
09/01/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: support.cleo.com
Status: Confirmed

CVE: CVE-2026-84114 (🔒)
GCVE (CVE): GCVE-0-2026-84114
GCVE (VulDB): GCVE-100-397557
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/01/2026 09:25
Changes: 09/01/2026 09:25 (58)
Complete: 🔍
Submitter: ilyass-armadin
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #882467: Cleo Harmony < 5.8.1.11 Authentication Bypass Issues (by support.cleo.com)

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