CVE-2026-8201

highpriority · track · 35EPSS 0.001 · 3 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.13% (3rd) EPSS

CVSS 8.8 · high

Is it mine?

34 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query. This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.4–8.8

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Hsecondary · cna@mongodb.comexploitability 1.6 · impact 4.7

v4.06.1mediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:N/SA:Nsecondary · ENISA EU

v4.06.1mediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/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

v4.02.4lowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/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)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416US

affected products (34)

Products and version ranges known to be affected.

Open Source MongoDB <7.0.34all versionscert_bundDE
Open Source MongoDB <8.0.23all versionscert_bundDE
Open Source MongoDB <8.2.9all versionscert_bundDE
Open Source MongoDB <8.3.2all versionscert_bundDE
Splunk Splunk Enterprise <10.0.8all versionscert_bundDE
Splunk Splunk Enterprise <10.2.5all versionscert_bundDE
Splunk Splunk Enterprise <10.4.1all versionscert_bundDE
Splunk Splunk Enterprise <9.4.13all versionscert_bundDE
Open Source MongoDB< 7.0.34cert_bundDE
Open Source MongoDB< 8.0.23cert_bundDE
Open Source MongoDB< 8.2.9cert_bundDE
Open Source MongoDB< 8.3.2cert_bundDE
Splunk Splunk Enterprise< 10.0.8cert_bundDE
Splunk Splunk Enterprise< 10.2.5cert_bundDE
Splunk Splunk Enterprise< 10.4.1cert_bundDE
Splunk Splunk Enterprise< 9.4.13cert_bundDE
MongoDB, Inc. MongoDB Server7.0 → 7.0.34enisa_euvdEU
MongoDB, Inc. MongoDB Server8.0 → 8.0.23enisa_euvdEU
MongoDB, Inc. MongoDB Server8.2 → 8.2.9enisa_euvdEU
MongoDB, Inc. MongoDB Server8.3 → 8.3.2enisa_euvdEU

showing 20 of 34

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1516MongoDB: Mehrere SchwachstellenDeutsch2026-05-12csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in MongoDB ausnutzen, um beliebigen Programmcode auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
BIT-mongodb-2026-8201Use-After-Free in MongoDB FLE Query Analysis When Processing Positional Projections on Encrypted Fields2026-05-14vendor · osvUS
A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query. This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund osv NVD CVE.org MITRE

published 2026-05-13modified 2026-10-26

references (4)

External citations — patches, advisories, analysis.

https://nvd.nist.gov/vuln/detail/CVE-2026-8201 cnnvd
https://www.mongodb.com/Patchcnnvd
https://jira.mongodb.org/browse/SERVER-122032 enisa_euvd
https://jira.mongodb.org/browse/SERVER-122032Issue TrackingVendor Advisorynvd

scry

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