Prototype pollution in Compass - CVE-2026-9101
Published: August 18, 2026 / Updated: August 18, 2026
Vulnerability identifier: #VU144160
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-9101
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute commands.
The vulnerability exists due to prototype pollution in csv parsing logic during import when parsing a crafted CSV file. A remote attacker can trick a victim into importing a crafted CSV file to execute commands.
User interaction is required, and exploitation depends on specific user behavior that leads to a one-click action through shell.openExternal with an untrusted file path.
Affected software
Compass
How to mitigate CVE-2026-9101
Install security update from vendor's website.
Compass - update to 1.49.6