CVE-2026-4148

highpriority · track · 0EPSS 0.003 · 27 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.34% (27th) EPSS

CVSS 8.8 · high

Is it mine?

29 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.

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 · medium–high · 6.3–8.8

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · cna@mongodb.comexploitability 2.8 · impact 5.9

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416US

affected products (29)

Products and version ranges known to be affected.

Open Source MongoDB <7.0.31all versionscert_bundDE
Open Source MongoDB <8.0.20all versionscert_bundDE
Open Source MongoDB <8.2.6all versionscert_bundDE
Open Source MongoDB <8.3.0-rc0all versionscert_bundDE
Splunk Splunk Enterprise <10.0.7all versionscert_bundDE
Splunk Splunk Enterprise <10.2.4all versionscert_bundDE
Splunk Splunk Enterprise <10.4.0all versionscert_bundDE
Splunk Splunk Enterprise <9.3.13all versionscert_bundDE
Splunk Splunk Enterprise <9.4.12all versionscert_bundDE
Open Source MongoDB< 7.0.31cert_bundDE
Open Source MongoDB< 8.0.20cert_bundDE
Open Source MongoDB< 8.2.6cert_bundDE
Open Source MongoDB< 8.3.0-rc0cert_bundDE
Splunk Splunk Enterprise< 10.0.7cert_bundDE
Splunk Splunk Enterprise< 10.2.4cert_bundDE
Splunk Splunk Enterprise< 10.4.0cert_bundDE
Splunk Splunk Enterprise< 9.3.13cert_bundDE
Splunk Splunk Enterprise< 9.4.12cert_bundDE
MongoDB Inc MongoDB Server7.0 → 7.0.31enisa_euvdEU
MongoDB Inc MongoDB Server8.0 → 8.0.20enisa_euvdEU

showing 20 of 29

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0773MongoDB: Mehrere SchwachstellenDeutsch2026-03-17csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in MongoDB ausnutzen, um Informationen offenzulegen, und um beliebigen Programmcode auszuführen.
BIT-mongodb-2026-4148ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators2026-05-13vendor · osvUS
A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2026-03-17modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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