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TI-2026-20718 Aliases CVE-2026-25611GHSA-x39r-jq9q-xvvh

Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server

Priority MEDIUM 45CWE-405Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00861 58th percentileScored 2026-11-07
Fix Fixed MongoDB Server (MongoDB Inc): 8.2.4, 8.0.18, 7.0.29

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 Server8.2 to before 8.2.4; 8.0 to before 8.0.18; 7.0 to before 7.0.298.2.4, 8.0.18, 7.0.29Patch availableCNA
  • MongoDB Server VendorMongoDB Affected 8.2 to before 8.2.4; 8.0 to before 8.0.18; 7.0 to before 7.0.29 Fixed in 8.2.4, 8.0.18, 7.0.29 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

  • Fix · CNA MongoDB Server (MongoDB Inc) Fixed in 8.2.4, 8.0.18, 7.0.29

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    MongoDB Server 7.0.29, 8.0.18, 8.2.4

    5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-01522 Resource allocation without limits in MongoDB ServerPriority MEDIUM 41
    • TI-2026-20720 An unsafe cast in the MongoDB query planner can result in a segmentation fault.Priority LOW 31
    • TI-2026-20719 Internal ResourceId collision may affect unrelated collectionsPriority LOW 31
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25611
  2. 2026-10-03 Alias added: GHSA-x39r-jq9q-xvvh
  3. 2026-10-08 EPSS moved to the 50th–90th percentile

References

Other 3

  • 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