CVE-2026-9742

⚠️ high

Summary

When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of the "authenticate" command that lead to server crash. The authenticate command is accessible to unauthenticated clients, leading to pre-auth denial-of-service in affected product configurations.

CVSS Score

7.5

High

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-09

First Seen: 2026-06-10

📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 68.9% of all 329,456 vulnerabilities in our database.

#102,448

Above average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 10, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-06-18

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/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:X

CWE IDs (Weakness Types)

CWE-1287

📦 Affected Products 2

Vendor	Product	Status	Affected Versions
mongodb	mongodb	Affected	> 8.2.0 < 8.2.10
mongodb	mongodb	Affected	> 8.3.0 < 8.3.3

🔗 References 1

https://jira.mongodb.org/browse/SERVER-124183

Patch Vendor Advisory Issue Tracking

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-11933	⚠️ high	8.8	0.4	A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents t...	2026-06-12
CVE-2026-9735	🔶 medium	5.5	0.1	MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. W...	2026-06-09
CVE-2026-9740	⚠️ high	7.5	0.3	A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by ...	2026-06-09
CVE-2026-9741	🔶 medium	6.5	0.1	A bug in query analysis processing of the $vectorSearch aggregation stage for Queryable Encryption (QE) or Client-Side F...	2026-06-09
CVE-2026-9743	🔶 medium	6.5	0.2	In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines...	2026-06-09
CVE-2026-9746	🔶 medium	6.5	0.3	When using $changestreams and $_requestReshardingResumeToken with the exchange option the server hits an invariant which...	2026-06-09

These CVEs affect the same products