CVE-2026-9742
Last modified
CVE-2026-9742 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mongodb | Mongodb | >= 8.2.0, < 8.2.10 |
| Mongodb | Mongodb | >= 8.3.0, < 8.3.3 |
References
- https://jira.mongodb.org/browse/SERVER-124183Patch, Vendor Advisory, Issue Tracking
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-9742?
How severe is CVE-2026-9742?
How do I fix CVE-2026-9742?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-9735MongoDB server may log authentication parameters, including …6.8
- CVE-2026-9737During query planning when reading the sort pattern in raw B…7.1
- CVE-2026-9738The Print, PDF, Email by PrintFriendly plugin for WordPress …4.4
- CVE-2026-9739Vulnerable to DNS rebinding attacks when using SSE (http://b…9.4
- CVE-2026-9740A vulnerability in MongoDB Server's BSON validation logic al…8.7
- CVE-2026-9741A bug in query analysis processing of the $vectorSearch aggr…7.1
- CVE-2026-9743In MongoDB Server 8.0, an aggregation stage can leave its _s…7.1
- CVE-2026-9746When using $changestreams and $_requestReshardingResumeToken…7.1
- CVE-2026-9747Adding fromRouter:true and runtimeConstants.userRoles could …7.1
- CVE-2026-9748The $_internalConvertBucketIndexStats stage used PauseExecut…7.1
- CVE-2026-9749This issue can occur when running an aggregation pipeline th…7.1
- CVE-2026-9750An authenticated user can cause a MongoDB server to crash or…7.1
Are you affected by CVE-2026-9742?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST