1. Home
  2. CVE Database
  3. CVE-2026-18704
MEDIUM · 6.5

CVE-2026-18704

An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This i...

Vulnerability Description

An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This is due to an internal-use aggregation stage being reachable by external clients without an appropriate authorization check on its embedded operations.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MongodbMongodb>= 8.3.0, < 8.3.8

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-18704?

CVE-2026-18704 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This i...

How severe is CVE-2026-18704?

CVE-2026-18704 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18704?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.