High severity · published Oct 21, 2026
CVE-2026-113870
Improper Encoding of Server-Supplied JavaScript Values in MongoDB Compass BSON Parsing
New
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
MongoDB Compass improperly escapes certain BSON values when converting a stored view’s aggregation pipeline into editable source. When a user connects to a MongoDB deployment containing a specially crafted view and opens that view for editing, the values can cause arbitrary code to execute with the privileges of the user running Compass.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
1.7.0 before 1.49.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113870
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113870
www.mongodb.com
https://www.mongodb.com/docs/compass/release-notes/#mongodb-compass-14915
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