CVE-2023-45303

Name: CVE-2023-45303
Creator: NVD / NIST
Published: 2023-10-06T19:15:13.04+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2023-45303 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. ThingsBoard before 3.5 allows Server-Side Template Injection if users are allowed to modify an email template, because Apache FreeMarker supports freemarker.template.utility.Execute (for content sent to the /api/admin/settings endpoint).. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

ThingsBoard before 3.5 allows Server-Side Template Injection if users are allowed to modify an email template, because Apache FreeMarker supports freemarker.template.utility.Execute (for content sent to the /api/admin/settings endpoint).

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.86%

53.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Thingsboard	Thingsboard	< 3.5

References

Timeline

Published: Oct 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-45303?

How severe is CVE-2023-45303?

CVE-2023-45303 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2023-45303?

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-2023-45303?

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

Scan your code now

Source: NVD / NIST