CVE-2026-9100

highpriority · track · 28EPSS 0.003 · 23 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.30% (23rd) EPSS

CVSS 7.1 · high

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).

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 · low–high · 2.3–7.1

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 4.2

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Hsecondary · cna@mongodb.comexploitability 1.6 · impact 4.2

v4.06mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.06mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/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

v4.02.3lowCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/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)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1285US

affected products (8)

Products and version ranges known to be affected.

Open Source MongoDB C Driver <1.30.8all versionscert_bundDE
Open Source MongoDB C Driver <2.2.4all versionscert_bundDE
Open Source MongoDB≤ C Driver <1.30.8cert_bundDE
Open Source MongoDB≤ C Driver <2.2.4cert_bundDE
MongoDB, Inc. C Driver1.0 → 1.30.8enisa_euvdEU
MongoDB, Inc. C Driver2.0 → 2.2.4enisa_euvdEU
mongodb c driver1.10.0 → 1.30.8nvdUScpe:2.3:a:mongodb:c_driver:*:*:*:*:*:*:*:*
mongodb c driver2.0.0 → 2.2.4nvdUScpe:2.3:a:mongodb:c_driver:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1621MongoDB (C Driver): Schwachstelle ermöglicht Denial of Service und Offenlegung von InformationenDeutsch2026-05-20csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in MongoDB C Driver ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-05-20modified 2026-09-24

references (4)

External citations — patches, advisories, analysis.

scry

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