CVE-2026-18696 PUBLISHED

Improper Authorization in MongoDB applyOps Command Handling Allows Unauthorized DDL Operations on Collections

Assigner: mongodb
Reserved: 03.08.2026 Published: 11.08.2026 Updated: 11.08.2026

An issue in MongoDB Server's applyOps command could allow an authenticated user with specific non-default privileges to perform certain data-definition operations, such as dropping or modifying collections, against collections they do not have permission to manipulate. This is due to an inconsistency in how the target collection is determined between the authorization check and the actual operation.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7

Product Status

Vendor MongoDB
Product MongoDB Server
Versions Default: unaffected
  • affected from 8.3.0 to 8.3.8 (excl.)
  • affected from 8.0 to 8.0.29 (excl.)
  • affected from 7.0 to 7.0.40 (excl.)

References

Problem Types

  • CWE-863: Incorrect Authorization CWE