CVE-2026-81526

mediumpriority · track · 0EPSS 0.004 · 34 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.40% (34th) EPSS

CVSS 6.5 · medium

Is it mine?

14 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondary · cna@mongodb.comexploitability 2.8 · impact 3.6

v4.07.1highCVSS: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:X/V:X/RE:X/U:Xsecondary · cna@mongodb.com

v4.04.9mediumCVSS: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:U/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:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-74US

affected products (14)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Open Source MongoDB≤ BI Connector <2.14.30cert_bundDE
Open Source MongoDB≤ C Driver <2.5.1cert_bundDE
Open Source MongoDB≤ C# Driver <3.11.1cert_bundDE
Open Source MongoDB≤ C++ Driver <4.5.1cert_bundDE
Open Source MongoDB≤ GO Driver <2.8.2cert_bundDE
Open Source MongoDB≤ PHP Driver <1.21.6cert_bundDE
Open Source MongoDB≤ PHP Driver <2.4.1cert_bundDE
Open Source MongoDB≤ PHP Library <1.21.4cert_bundDE
Open Source MongoDB≤ PHP Library <2.4.1cert_bundDE
Open Source MongoDB≤ Rust Driver <3.8.2cert_bundDE
Open Source MongoDB≤ libmongocrypt <1.20.3cert_bundDE
mongodb rust driver3.0.0 → 3.8.2nvdUScpe:2.3:a:mongodb:rust_driver:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3066MongoDB Clients: Mehrere SchwachstellenDeutsch2026-08-27csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen MongoDB Clients ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-08-27modified 2026-09-29

references (2) nvd

External citations — patches, advisories, analysis.

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

scry

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