CVE-2026-8053 PUBLISHED

FlatBSON Duplicate Field Index Drift

Assigner: mongodb
Reserved: 06.05.2026 Published: 12.05.2026 Updated: 13.05.2026

An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution.

This issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Product Status

Vendor MongoDB, Inc.
Product MongoDB Server
Versions Default: unaffected
  • affected from 5.0 to 5.0.33 (excl.)
  • affected from 6.0 to 6.0.28 (excl.)
  • affected from 7.0 to 7.0.34 (excl.)
  • affected from 8.0 to 8.0.23 (excl.)
  • affected from 8.2 to 8.2.9 (excl.)
  • affected from 8.3 to 8.3.2 (excl.)

References

Problem Types

  • CWE-787: Out-of-bounds Write CWE