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Vulnerability record · CVE-2026-81526 · published 27 August 2026

CVE-2026-81526: Injection vulnerability

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.

7.1 CVSS 4.0 High EPSS 0.35% · top 74.1% CWE-74 · Injection Undergoing Analysis
7.1CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
28 Aug 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/mongodb/mongo-rust-driver/releases/tag/v3.8.2
https://jira.mongodb.org/browse/RUST-2467

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Source: NIST National Vulnerability Database (record CVE-2026-81526), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.