EUVD-2026-40004
GHSA-6rrp-mghv-q9rf
Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network vector and high complexity match description; PR:L reflects authenticated low-privilege requirement; no scope change; all impacts capped at Low.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability was detected in volcengine OpenViking up to 0.3.21. This affects the function str_to_uint64 of the file openviking/storage/vectordb/utils/str_to_uint64.py of the component Local VectorDB Primary-key Label Handler. The manipulation of the argument ID results in insufficient verification of data authenticity. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is reported as difficult. The pull request to fix this issue awaits acceptance.
AnalysisAI
Insufficient data authenticity verification in volcengine OpenViking's Local VectorDB Primary-key Label Handler (versions up to 0.3.21) allows a remote attacker with low-privilege access to manipulate the ID argument passed to the str_to_uint64 function, potentially enabling limited tampering with vector database primary-key label data. The attack vector is network-accessible but rated highly complex, with CVSS 4.0 score of 2.3 reflecting constrained, low-severity impact across confidentiality, integrity, and availability. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated session with at least low-privilege access to the OpenViking service (PR:L per CVSS 4.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 4.0 scores this at 2.3 (Low), driven by high attack complexity (AC:H), a low-privilege prerequisite (PR:L), and only low-severity impact across all three CIA pillars with no subsequent-system scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated user with low-privilege access to an OpenViking VectorDB API endpoint crafts a malicious ID string and submits it to the str_to_uint64 handler, bypassing authenticity checks to inject a manipulated primary-key label into the vector database. Because attack complexity is rated high, the attacker must overcome non-trivial preconditions - such as precise timing, knowledge of internal ID structures, or specific service configurations - before the manipulation yields a meaningful impact on stored data. … |
| Remediation | No released patched version has been confirmed - the upstream fix exists only as an unmerged pull request (https://github.com/volcengine/OpenViking/pull/2268) that adds versioned HKDF key derivation context in crypto/providers.py. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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