CVE-2026-18852
epsilla-cloud vectordb Filter expr.cpp ShuntingYard unusual condition
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 4, 2026
- Updated
- Aug 5, 2026
- Reserved
- Aug 4, 2026
Description
A vulnerability has been found in epsilla-cloud vectordb up to 0.3.18/df5a5f5afb85a2376a0f2f316c79dea9b2c6ac7a. This impacts the function SplitTokens/ShuntingYard of the file engine/query/expr/expr.cpp of the component Filter Parser. Such manipulation leads to improper check for unusual conditions. The attack needs to be performed locally. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-754 Improper Check for Unusual Conditions
Affected Products
| Product | Versions |
|---|---|
vectordbepsilla-cloud |
|
References
- VDB-385857 | epsilla-cloud vectordb Filter expr.cpp ShuntingYard unusual conditionvdb-entrytechnical-description
- VDB-385857 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-18852 | CVE Analysis and Reportthird-party-advisory
- Submit #858196 | epsilla-cloud VectorDB df5a5f5afb85a2376a0f2f316c79dea9b2c6ac7a CWE-754: Improper Check for Unusual or Exceptional Conditionsthird-party-advisory
- https://github.com/fa1c4/security-advisories/tree/main/VectorDBrelated
- https://github.com/fa1c4/security-advisories/tree/main/VectorDB/PoCexploit
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.