CVE-2026-18852
epsilla-cloud vectordb Filter expr.cpp ShuntingYard unusual condition
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.
INFO
Published Date :
Aug. 5, 2026, 12:16 a.m.
Last Modified :
Oct. 23, 2026, 9:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update epsilla-cloud vectordb to the latest version.
- Apply vendor patches when available.
- Review the filtering logic for robustness.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18852.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18852 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18852
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18852 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18852 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: vectordb de epsilla-cloud, Description: Una vulnerabilidad ha sido encontrada en epsilla-cloud vectordb hasta 0.3.18/df5a5f5afb85a2376a0f2f316c79dea9b2c6ac7a. Esto afecta la función SplitTokens/ShuntingYard del archivo engine/query/expr/expr.cpp del componente Filter Parser. Dicha manipulación conduce a una comprobación incorrecta para condiciones inusuales. El ataque necesita ser realizado localmente. El exploit ha sido divulgado al público y puede ser utilizado. El proveedor fue contactado tempranamente sobre esta divulgación pero no respondió de ninguna manera. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 05, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-18852', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-05T13:17:52.467668Z'} -
New CVE Received by [email protected]
Aug. 05, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:epsilla-cloud:vectordb:*:*:*:*:*:*:*:*'], 'vendor': 'epsilla-cloud', 'modules': ['Filter Parser'], 'product': 'vectordb', 'versions': [{'status': 'affected', 'version': '0.3.0'}, {'status': 'affected', 'version': '0.3.1'}, {'status': 'affected', 'version': '0.3.2'}, {'status': 'affected', 'version': '0.3.3'}, {'status': 'affected', 'version': '0.3.4'}, {'status': 'affected', 'version': '0.3.5'}, {'status': 'affected', 'version': '0.3.6'}, {'status': 'affected', 'version': '0.3.7'}, {'status': 'affected', 'version': '0.3.8'}, {'status': 'affected', 'version': '0.3.9'}, {'status': 'affected', 'version': '0.3.10'}, {'status': 'affected', 'version': '0.3.11'}, {'status': 'affected', 'version': '0.3.12'}, {'status': 'affected', 'version': '0.3.13'}, {'status': 'affected', 'version': '0.3.14'}, {'status': 'affected', 'version': '0.3.15'}, {'status': 'affected', 'version': '0.3.16'}, {'status': 'affected', 'version': '0.3.17'}, {'status': 'affected', 'version': '0.3.18'}, {'status': 'affected', 'version': 'df5a5f5afb85a2376a0f2f316c79dea9b2c6ac7a'}]}] Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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 Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-754 Added Reference https://github.com/fa1c4/security-advisories/tree/main/VectorDB Added Reference https://github.com/fa1c4/security-advisories/tree/main/VectorDB/PoC Added Reference https://vuldb.com/cve/CVE-2026-18852 Added Reference https://vuldb.com/submit/858196 Added Reference https://vuldb.com/vuln/385857 Added Reference https://vuldb.com/vuln/385857/cti