CVE-2020-1771 - CVE House
Back to Database
Status published Medium CVE-2020-1771

Possible XSS in Customer user address book

Vulnerability Description

Attacker is able craft an article with a link to the customer address book with malicious content (JavaScript). When agent opens the link, JavaScript code is executed due to the missing parameter encoding. This issue affects: ((OTRS)) Community Edition: 6.0.26 and prior versions. OTRS: 7.0.15 and prior versions.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-1771

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Christoph Wuetschner

References

More from OTRS AG

View All →
CVE-2025-24391
Possible user enumeration
Medium 5.3
CVE-2025-24390
Missing Cookie Flags
Medium 6.8
CVE-2025-24389
SMTP Password will be shown in cleartext on some SMTP errors
Medium 6.3
CVE-2025-24388
Unsafe handling of AJAX calls
Low 3.8
CVE-2025-24387
Missing CSRF protection
Medium 4.8

Affected Vendor

Affected Software

((OTRS)) Community Edition, OTRS
Vulnerable Versions:
6.0.x, 7.0.x

Timeline

Official Publish: March 27th, 2020
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Weaknesses (CWE)

CWE-79

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059.007 JavaScript
Execution
T1539 Steal Web Session Cookie
Collection
T1213 Data from Information Repositories
Collection
T1567 Exfiltration Over Web Service
Exfiltration
T1491.001 Defacement
Impact