Vulnerability · Published May 20, 2026 · Assigned by mongodb
CVE-2026-9101Prototype pollution in csv parsing
Medium 4.3
In plain English
A medium-severity prototype pollution in Compass from MongoDB, Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 64.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MongoDB, Inc. | Compass | 1.36.31.36.41.37.01.38.01.38.11.38.21.39.01.39.1 |
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
References
- https://jira.mongodb.org/browse/COMPASS-10657 issue-tracking