MongoDB C Driver up to 2.2.2 neutralization of null byte

CVSS Meta Temp Score
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CTI Interest Score
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1.9$0-$5k0.00

Summaryinfo

A vulnerability was found in MongoDB C Driver up to 2.2.2. It has been classified as problematic. This affects an unknown function. Performing a manipulation results in neutralization of null byte. This vulnerability is reported as CVE-2026-4359. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in MongoDB C Driver up to 2.2.2. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a neutralization of null byte vulnerability. CWE is classifying the issue as CWE-158. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes NUL characters or null bytes when they are sent to a downstream component. This is going to have an impact on availability. The summary by CVE is:

A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.

The weakness was disclosed by Halil Oktay. It is possible to read the advisory at jira.mongodb.org. This vulnerability is uniquely identified as CVE-2026-4359 since 03/17/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 302819 (Linux Distros Unpatched Vulnerability : CVE-2026-4359), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.2.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (302819). Be aware that VulDB is the high quality source for vulnerability data.

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: 2.0
VulDB Meta Temp Score: 1.9

VulDB Base Score: 2.0
VulDB Temp Score: 1.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.0
CNA Vector (mongodb): 🔒

CVSSv2info

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

Exploitinginfo

Class: Neutralization of null byte
CWE: CWE-158 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302819
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-4359

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: C Driver 2.2.3

Timelineinfo

03/17/2026 CVE reserved
03/18/2026 +1 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
03/21/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: jira.mongodb.org
Researcher: Halil Oktay
Status: Confirmed

CVE: CVE-2026-4359 (🔒)
GCVE (CVE): GCVE-0-2026-4359
GCVE (VulDB): GCVE-100-351447

Entryinfo

Created: 03/18/2026 02:56
Updated: 03/21/2026 22:11
Changes: 03/18/2026 02:56 (76), 03/18/2026 08:22 (2), 03/21/2026 22:11 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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