CVE-2021-27945: Squirro

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

The Squirro Insights Engine was affected by a Reflected Cross-Site Scripting (XSS) vulnerability affecting versions 2.0.0 up to and including 3.2.4. An attacker can use the vulnerability to inject malicious JavaScript code into the application, which will execute within the browser of any user who views the relevant application content. The attacker-supplied code can perform a wide variety of actions, such as stealing victims' session tokens or login credentials, performing arbitrary actions on their behalf, and logging their keystrokes.

Affected products

• Squirro Squirro: from 2.0.0, up to and including 3.2.4

Published 2021-04-08. Last modified 2026-06-17.