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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-11933

35
FAUCET Score

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.

First published: Jun 12, 2026Last modified: Jun 12, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.4.0, < 4.4.31CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
>= 5.0.0, < 5.0.34CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
>= 6.0.0, < 6.0.29CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
>= 7.0.0, < 7.0.37CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
>= 8.0.0, < 8.0.26CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 19th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jira.mongodb.org / browse/SERVER-128125
PatchVendor Advisory