MongoDBCVE-2026-18705
MongoDB Server: untrusted input in a security decision
High7.1CVE-2026-18705 · Published Aug 11, 2026 · updated Sep 16, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| MongoDB Server Product | >= 8.3.0, < 8.3.8 | 8.3.8 |
| >= 8.0, < 8.0.29 | 8.0.29 | |
| >= 7.0, < 7.0.40 | 7.0.40 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-807
More MongoDB advisories
All MongoDB| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 11 | Cleartext Storage of Sensitive Information in MongoDB Driver Logging During Client Initialization | Medium6.5 | 5.9.2+1 more |
| Aug 11 | MongoDB Server: improper authorization | High7.2 | 8.3.8+2 more |
| Aug 11 | MongoDB Server: use after free | High7.1 | 8.3.8+1 more |
| Aug 11 | MongoDB Server: missing authorization | High7.1 | 8.3.8 |
| Aug 11 | MongoDB Server: use after free | High7.5 | 8.3.8 |
| Aug 11 | MongoDB Server: denial of service | Medium5.3 | 8.3.8 |