Is CVE-2026-9741 in the CISA KEV catalog?

No. CVE-2026-9741 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-9741?

CVE-2026-9741 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-9741?

CVE-2026-9741 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9741?

Upgrade MongoDB to 8.0.24 or later.

CVE & CISA-KEV Catalog

CVE-2026-9741

MEDIUM

6.5

CVSS v3

NVD

Description

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.

CWE-319

How to fix

Remediation Available

MongoDBWindows application

Affected:8.0.0 8.0.24Fixed in:8.0.24MongoDB Inc.

Affected:8.2.0 8.2.10Fixed in:8.2.10MongoDB Inc.

Affected:7.0.0 7.0.35Fixed in:7.0.35MongoDB Inc.

Affected:8.3.0 8.3.3Fixed in:8.3.3MongoDB Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Patch1

jira.mongodb.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-18.