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TI-2026-05975 Aliases CVE-2026-6811GHSA-vc69-vr6f-4x67

PHP Stack Exhaustion

Priority LOW 27CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
High
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-674.

Summary

Stack exhaustion vulnerability in the MongoDB PHP driver can cause application crashes when processing deeply nested BSON documents in unusual circumstances when the source of these BSON documents is not MongoDB Server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00367 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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
MongoDBPHP Driver1.21.5; 2.1.8—No fix listedCNA
  • PHP Driver VendorMongoDB Affected 1.21.5; 2.1.8 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:*1.21.0 to before 1.21.5; 2.1.0 to before 2.1.8VulnerableMongoDB
  • cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:* Versions 1.21.0 to before 1.21.5; 2.1.0 to before 2.1.8 Vulnerable ·MongoDB

Remediation

No fixed version listed by the sources yet.

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-2026-6811
  2. 2026-10-03 Alias added: GHSA-vc69-vr6f-4x67

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-2026-58391 Heap out-of-bounds read via corrupt nested BSON in field path error message CVSS 4.0MEDIUM 6.9
  • 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
See all 7 →

Sources

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