Is CVE-2026-11933 in the CISA KEV catalog?

No. CVE-2026-11933 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-11933?

CVE-2026-11933 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2026-11933?

CVE-2026-11933 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-11933

HIGH

8.8

CVSS v3

NVD

Description

A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.

CWE-787Out-of-bounds Write CWE-416Use After Free

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

https://jira.mongodb.org/browse/SERVER-128125

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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 2026-06-22.