MongoDB Server up to 7.0.33/8.0.22/8.2.8/8.3.1 mongocryptd/crypt_shared use after free

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in MongoDB Server up to 7.0.33/8.0.22/8.2.8/8.3.1. It has been rated as critical. Affected is an unknown function of the component mongocryptd/crypt_shared. The manipulation leads to use after free. This vulnerability is documented as CVE-2026-8201. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in MongoDB Server up to 7.0.33/8.0.22/8.2.8/8.3.1 and classified as critical. This issue affects an unknown function of the component mongocryptd/crypt_shared. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free vulnerability exists in MongoDB'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's FLE-related query. 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.

The advisory is shared at jira.mongodb.org. The identification of this vulnerability is CVE-2026-8201 since 05/09/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 315232 (MongoDB 7.0.x < 7.0.34 / 8.0.x < 8.0.23 / 8.2.x < 8.2.9 / 8.3.x < 8.3.2 Multiple Vulnerabilities (SERVER-122032 / SERVER-122449)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.34, 8.0.23, 8.2.9 or 8.3.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (315232). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.4
CNA Vector (mongodb): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 315232
Nessus Name: MongoDB 7.0.x < 7.0.34 / 8.0.x < 8.0.23 / 8.2.x < 8.2.9 / 8.3.x < 8.3.2 Multiple Vulnerabilities (SERVER-122032 / SERVER-122449)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Server 7.0.34/8.0.23/8.2.9/8.3.2

Timelineinfo

05/09/2026 CVE reserved
05/13/2026 +4 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
05/19/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: jira.mongodb.org
Status: Confirmed

CVE: CVE-2026-8201 (🔒)
GCVE (CVE): GCVE-0-2026-8201
GCVE (VulDB): GCVE-100-363461

Entryinfo

Created: 05/13/2026 07:10
Updated: 05/19/2026 19:57
Changes: 05/13/2026 07:10 (77), 05/19/2026 19:57 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!