CVE-2023-5421

Name: CVE-2023-5421
Creator: NVD / NIST
Published: 2023-10-16T09:15:11.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2023-5421 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An attacker who is logged into OTRS as an user with privileges to create and change customer user data may manipulate the CustomerID field to execute JavaScript code that runs immediatly after the data is saved.The issue onlyoccurs if the configuration for AdminCustomerUser::UseAutoComplete was changed before. This issue affects OTRS: from 7.0.X before 7.0.47, from 8.0.X before 8.0.37; ((OTRS)) Community Edition: from 6.0.X through 6.0.34. . EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

An attacker who is logged into OTRS as an user with privileges to create and change customer user data may manipulate the CustomerID field to execute JavaScript code that runs immediatly after the data is saved.The issue onlyoccurs if the configuration for AdminCustomerUser::UseAutoComplete was changed before. This issue affects OTRS: from 7.0.X before 7.0.47, from 8.0.X before 8.0.37; ((OTRS)) Community Edition: from 6.0.X through 6.0.34.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.37%

29.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Otrs	Otrs	>= 6.0.0, <= 6.0.34
Otrs	Otrs	>= 7.0.0, < 7.0.47
Otrs	Otrs	>= 8.0.0, < 8.0.37

References

https://otrs.com/release-notes/otrs-security-advisory-2023-09/Vendor Advisory
https://otrs.com/release-notes/otrs-security-advisory-2023-09/Vendor Advisory

Timeline

Published: Oct 16, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5421?

How severe is CVE-2023-5421?

CVE-2023-5421 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5421?

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-2023-5421?

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

Scan your code now

Source: NVD / NIST