What’s Vulnerable › Vulnerabilities
CVE-2026-18705: Improper Authorization in MongoDB Atlas Vector Search Allows Unauthorized Access to Protected View Data
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-11 · updated 2026-10-23
- Weakness: CWE-807
Description
An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process.
Affected products
- MongoDB: from 7.0.0 before 7.0.40; from 8.0.0 before 8.0.29; from 8.2.0 through 8.2.12; from 8.3.0 before 8.3.8; 9.0.0-alpha0, 9.0.0-alpha1, 9.1.0-alpha0 — fixed in 7.0.40, 8.0.29, 8.3.8
How to fix
Upgrade to a fixed version: MongoDB 7.0.40, 8.0.29, 8.3.8. Check the vendor advisory for mitigations.
References
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