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Combodo iTop EUVDEUVD-2026-64187

| CVE-2026-34948 HIGH
Information Exposure (CWE-200)
2026-08-21 GitHub_M
Information Disclosure Itop Combodo
7.7
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.7 HIGH
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
vuln.today AI
7.7 HIGH

Web-delivered OQL bypass requires low-privilege auth (PR:L); scope changes because cross-silo tenant data is exposed; read-only impact justifies I:N and A:N.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Source Code Evidence Fetched
Aug 21, 2026 - 23:21 vuln.today
Analysis Generated
Aug 21, 2026 - 23:21 vuln.today
Patch available
Aug 21, 2026 - 23:02 EUVD
CVE Published
Aug 21, 2026 - 22:26 cve.org
HIGH 7.7

DescriptionCVE.org

Combodo iTop is a web based IT service management tool. Prior to 3.2.3, only classes present in the SELECT clause are protected by the silos access check in OQL. This issue has been fixed in version 3.2.3.

AnalysisAI

Access control bypass in Combodo iTop prior to 3.2.3 allows authenticated low-privileged users to read data outside their assigned silos via crafted OQL queries. The iTop silo isolation mechanism - which restricts users to specific data partitions - fails to apply visibility filters to classes joined in OQL but not explicitly listed in the SELECT clause, enabling cross-silo confidential data disclosure. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated iTop account with OQL query submission privileges (confirmed PR:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.7 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) reflects network-accessible exploitation at low complexity by any authenticated user, with a scope change indicating that data outside the user's security boundary is reachable. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Combodo iTop to version 3.2.3 or later per the vendor advisory at https://github.com/Combodo/iTop/security/advisories/GHSA-cm4j-52rf-whgc (patch commit e467ca83cfcfc5ba1f1d78a99d4805e595f114ba). … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all Combodo iTop instances and identify those running versions prior to 3.2.3, then assess whether multi-silo configurations are in use. …

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EUVD-2026-64187 vulnerability details – vuln.today
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