CVE-2026-6811
PHP Stack Exhaustion
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-674 |
| Vendor | mongodb inc. |
| Product | php driver |
| Published | May 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB Inc. / PHP Driver
1.21.5 2.1.8