CVE-2020-27687: Thingsboard

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

ThingsBoard before v3.2 is vulnerable to Host header injection in password-reset emails. This allows an attacker to send malicious links in password-reset emails to victims, pointing to an attacker-controlled server. Lack of validation of the Host header allows this to happen.

Affected products

• Thingsboard Thingsboard: before 3.2 (fixed in 3.2)

Published 2020-12-18. Last modified 2026-06-17.