CVE-2026-9101 Prototype pollution in csv parsing
Prototype pollution in CSV parsing allows attackers to execute arbitrary commands via shell.openExternal after specific user interactions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-9101?
CVE-2026-9101 is a medium-severity code injection vulnerability in MongoDB, Inc. Compass, published on 20 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-1321
Which versions are affected by CVE-2026-9101?
It affects 1 product.
Products include Mongodb Compass.
How do I fix CVE-2026-9101?
No fix has been published for CVE-2026-9101 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-9101 being exploited?
There is no known exploitation of CVE-2026-9101 in the wild and no public exploit code.
Other vulnerabilities in MongoDB, Inc. Compass
- CVE-2026-14881 Command injection in MongoDB Compass
- CVE-2025-1755 MongoDB Compass may be susceptible to local privilege escalation in Windows
- CVE-2024-3371 Insufficient validation of external input in Compass may enable MITM attacks
- CVE-2024-6376 ejson shell parser in MongoDB Compass maybe bypassed
- CVE-2021-20334 Local privilege escalation in MongoDB Compass for Windows
Sources
Also known as GHSA-hwpv-w8h7-v7qm.