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CVE-2026-9741

🔶 medium
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Summary

A bug in query analysis processing of the $vectorSearch aggregation stage for Queryable Encryption (QE) or Client-Side Field Level Encryption (CSFLE) results in literal values for encrypted fields within the $vectorSearch stage filter expressions to be sent to the server as plaintext instead of ciphertext.

CVSS Score
6.5
Medium
EPSS Score
0.1
Exploit Probability
Published Date
2026-06-09
First Seen: 2026-06-10
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 47.8% of all 329,456 vulnerabilities in our database.

#172,059
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jun 10, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
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:L/UI:N/S:U/C:H/I:N/A:N
CVSS Vector 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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)

📦 Affected Products 4

🔗 References 1

https://jira.mongodb.org/browse/SERVER-123507
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-2026-9742 ⚠️ high 7.5 0.4 When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of th... 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