CVE-2023-5421

Possible XSS execution in customer information

MEDIUM
5.5
CVSS Score
Published: October 16, 2023 at 08:10 AM UTC
Updated: June 17, 2026 at 06:48 AM UTC
1 product affected across 1 vendorOTRS

Using OTRS by OTRS AG?

Get instant alerts when new vulnerabilities affect OTRS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.0.0 ≤ v ≤ 6.0.346.0.x ≤ v ≤ 6.0.347.0.0 ≤ v < 7.0.477.0.x ≤ v < 7.0.478.0.0 ≤ v < 8.0.378.0.x ≤ v < 8.0.376.0.x7.0.x8.0.x
Affected range stops below 7.0.47, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.37, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card