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TI-2026-71835 Aliases CVE-2026-103965GHSA-8w3x-ww8f-273q

Fixed values in MongoDB Server $bucket stage may be misread as field references

Priority LOW 23CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

An issue in the aggregation framework of MongoDB Server affects versions from 8.3.0 before 8.3.13, from 8.0 before 8.0.34, from 7.0 before 7.0.45, and from 9.0 before 9.0.4. The flaw means certain constant values are mishandled during internal query rewriting (CWE-94). An authenticated user with read access can receive field values in aggregation output that the query did not intend to return.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

An issue in MongoDB Server's aggregation framework can cause certain constant values to be handled incorrectly during internal query rewriting. Under certain conditions, an authenticated user with read access may receive field values in aggregation output that the query did not intend to return.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0015 4th percentileScored 2026-11-07
Fix Fixed MongoDB Server (MongoDB): 8.3.13, 8.0.34, 7.0.45 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MongoDBMongoDB Server8.3.0 to before 8.3.13; 8.0 to before 8.0.34; 7.0 to before 7.0.45; 9.0 to before 9.0.48.3.13, 8.0.34, 7.0.45, 9.0.4Patch availableCNA
  • MongoDB Server VendorMongoDB Affected 8.3.0 to before 8.3.13; 8.0 to before 8.0.34; 7.0 to before 7.0.45; 9.0 to before 9.0.4 Fixed in 8.3.13, 8.0.34, 7.0.45, 9.0.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*——MongoDB
  • cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* Versions — — ·MongoDB

Remediation

Upgrade MongoDB Server to 8.3.13, 8.0.34, 7.0.45 or 9.0.4, depending on the release line in use. The sources do not list a vendor advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA MongoDB Server (MongoDB) Fixed in 8.3.13, 8.0.34, 7.0.45, 9.0.4

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-103965
  2. 2026-10-13 CISA SSVC decision points changed
  3. 2026-10-13 Alias added: GHSA-8w3x-ww8f-273q

References

Other 1

  • TI-2019-08023 Code injection in mongo-express KEVCVSS 3.1CRITICAL 9.9
  • TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
  • TI-2026-79432 BSON output corruption via out-of-range binary subtype in MongoDB C# Driver CVSS 4.0MEDIUM 6.9
  • TI-2026-79424 NoSQL command injection via mismatched BSON length in MongoDB C# Driver CVSS 4.0MEDIUM 6.9
  • TI-2026-79422 Unbounded memory growth in MongoDB C# Driver BSON deserialization CVSS 4.0HIGH 8.2
  • TI-2026-79427 Authentication bypass via issuer-and-serial-only certificate equality CVSS 4.0HIGH 7.6
See all 376 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences