EUVD-2026-77375
GHSA-h6hm-vrjv-9gv4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
REST API FIQL search requires authentication (PR:L); Neo4j backend must be configured (AC:L once present); high C/I impact given identity store sensitivity; limited availability impact.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
3DescriptionCVE.org
Cypher injection vulnerability in the Neo4j persistence layer when processing some FIQL search conditions.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2.
Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
AnalysisAI
Cypher injection in Apache Syncope's Neo4j graph database persistence layer allows attackers to craft malicious FIQL search queries that escape intended query boundaries, potentially exposing or manipulating identity governance data. All three active release branches are affected - 3.0.x through 3.0.16, 4.0.x through 4.0.7, and 4.1.x through 4.1.2 - indicating a longstanding architectural deficiency in the FIQL-to-Cypher translation path. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all of the following: the target Syncope deployment must use the Neo4j persistence layer as its active backend (this is an optional configuration - deployments using only JPA/relational backends are not affected); the attacker must hold valid credentials to authenticate against the Syncope REST API; and the request must target a FIQL-enabled search endpoint that processes the injected input through the vulnerable Neo4j query builder. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector was provided for this CVE, requiring full metric inference from description and architecture. … 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 to Apache Syncope 4.0.8 or 4.1.3, which resolve this issue, per the vendor advisory at https://lists.apache.org/thread/cwcc0pz53q6cr0tms9dh5hycboqocw0d. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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