Medium 6.5Published Aug 27, 2026

CVE-2026-81526Cross-database write redirection via unvalidated dotted database name in bulk write namespaces

Updated under an hour ago (2026-10-19 11:40 UTC)

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It affects MongoDB Rust Driver. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for MongoDB Rust Driver

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-74
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mongodb
NVD analysis: Analyzed
Record last updated: Aug 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MongoDB Rust Driver mongodb:rust_driver (from the name)	from 3.0.0 before 3.8.2	CNA record
mongodb rust_driver mongodb:rust_driver	from 3.0.0 before 3.8.2	NVD

References

https://jira.mongodb.org/browse/RUST-2467vendor-advisory
https://github.com/mongodb/mongo-rust-driver/releases/tag/v3.8.2product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.