CVE-2023-0437

MongoDB client C Driver may infinitely loop when validating certain BSON input data

HIGH
7.5
CVSS Score
Published: January 12, 2024 at 01:33 PM UTC
Updated: June 17, 2026 at 05:25 AM UTC
1 product affected across 1 vendorC++ Driver

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

When calling bson_utf8_validate on some inputs a loop with an exit condition that cannot be reached may occur, i.e. an infinite loop. This issue affects All MongoDB C Driver versions prior to versions 1.25.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.25.01.0.0 ≤ v < 1.25.01.0.0
Affected range stops below 1.25.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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