CVE-2026-81526

Cross-database write redirection via unvalidated dotted database name in bulk write namespaces

Published: Aug 27, 2026Updated: Aug 28, 2026 Sources: CVE List NVDCWE-74

6.5MEDIUM

Description

The MongoDB Rust Driver does not neutralize special characters in a caller-supplied target identifier before embedding it in the request it sends to the server. An actor able to influence that identifier in an application using the driver may cause write operations to be applied to an unintended target within the same deployment using the application's own credentials. This may result in unauthorized modification of data belonging to another logical boundary enforced by the application.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-74

Affected Products

MongoDB

commercial·US

Rust Driver

Databases

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://github.com/mongodb/mongo-rust-driver/releases/tag/v3.8.2

github.com

https://jira.mongodb.org/browse/RUST-2467

jira.mongodb.org

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