Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-8201

Severity CVSS v4.0:
MEDIUM
Type:
CWE-416 Use After Free
Publication date:
13/05/2026
Last modified:
13/05/2026

Description

A use-after-free vulnerability exists in MongoDB&amp;#39;s Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client&amp;#39;s FLE-related query.<br /> <br /> This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:N/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Attack Requirements (AT): Present
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): Low
Integrity (VI): Low
Availability (VA): High
Confidentiality (SC): Low
Integrity (SI): None
Availability (SA): None

Base Score 4.0
6.10
Severity 4.0
MEDIUM
Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): High

Base Score 3.x
6.40
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* 7.0.0 (including) 7.0.34 (excluding)
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* 8.0.0 (including) 8.0.23 (excluding)
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* 8.2.0 (including) 8.2.9 (excluding)
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* 8.3.0 (including) 8.3.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools