CVE-2020-27687

Name: CVE-2020-27687
Creator: NVD / NIST
Published: 2020-12-18T19:15:14.767+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2020-27687 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Thingsboard	Thingsboard	< 3.2

References

https://gist.github.com/vin01/26a8bb13233acd9425e7575a7ad4c936Exploit, Third Party Advisory
https://github.com/thingsboard/thingsboard/commits/masterThird Party Advisory
https://gist.github.com/vin01/26a8bb13233acd9425e7575a7ad4c936Exploit, Third Party Advisory
https://github.com/thingsboard/thingsboard/commits/masterThird Party Advisory

Timeline

Published: Dec 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27687?

How severe is CVE-2020-27687?

CVE-2020-27687 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27687?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27687?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST