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TI-2026-58391 Aliases CVE-2026-84968

Heap out-of-bounds read via corrupt nested BSON in field path error message

Priority LOW 36CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is returned to application code. This may result in unintended disclosure of limited memory contents.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00198 9th percentileScored 2026-11-07
Fix Fixed PHP Driver (MongoDB): 1.21.8, 2.1.9, 2.5.1

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
MongoDBPHP Driver1.15.0 to before 1.21.8; 2.0.0 to before 2.1.9; 2.2.0 to before 2.5.11.21.8, 2.1.9, 2.5.1Patch availableCNA
  • PHP Driver VendorMongoDB Affected 1.15.0 to before 1.21.8; 2.0.0 to before 2.1.9; 2.2.0 to before 2.5.1 Fixed in 1.21.8, 2.1.9, 2.5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:*1.15.0 to before 1.21.9; 2.0.0 to before 2.1.9; 2.2.0 to before 2.5.2VulnerableMongoDB
  • cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:* Versions 1.15.0 to before 1.21.9; 2.0.0 to before 2.1.9; 2.2.0 to before 2.5.2 Vulnerable ·MongoDB

Remediation

  • Fix · CNA PHP Driver (MongoDB) Fixed in 1.21.8, 2.1.9, 2.5.1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84968

References

Advisory 1

  • TI-2026-56246 Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver CVSS 4.0HIGH 8.6
  • TI-2024-07001 Accessing Untrusted Directory May Allow Local Privilege Escalation CVSS 3.1HIGH 7.8
  • TI-2021-12015 Information disclosure in MongoDB C Driver CVSS 3.1HIGH 7.5
  • TI-2025-11114 Bulk write with options may read invalid memory CVSS 4.0MEDIUM 6.9
  • TI-2026-69733 Unchecked BSON encoder return values in MongoDB PHP Driver CVSS 4.0MEDIUM 6.3
  • TI-2026-05975 PHP Stack Exhaustion CVSS 4.0MEDIUM 6.0
See all 7 →

Sources

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