CVE-2026-81523

mediumpriority · track · 0EPSS 0.001 · 1 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.10% (1st) EPSS

CVSS 4.4 · medium

Is it mine?

14 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-28

A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The resulting impact is limited to incorrect schema selection, which may lead to limited disclosure or modification of information handled by the application.

cvss

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

4.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 0.4–4.4

v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · cna@mongodb.comexploitability 1.8 · impact 2.5

v4.02lowCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/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

v4.00.4lowCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/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 libmongocrypt< 1.20.3nvdUScpe:2.3:a:mongodb:libmongocrypt:*:*:*:*:*:*:*:*

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 2026-08-28

references (2) nvd

External citations — patches, advisories, analysis.

scry

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