What is CVE-2026-48209?

CVE-2026-48209 is a high-severity vulnerability in Otrs, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-06-01.

How severe is CVE-2026-48209?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Otrs

CVE-2026-48209

An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated with ticket actions. By injecting malicious JavaScript into manipulated request URLs, attackers can execute arbitrary script code in the context of an authenticated agent session when the crafted link is opened. This issue affects OTRS: * 7.0.x Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N.

Affected products

Otrs
Otrs Ag — versions 7.0.x
Otrs Ag ((Otrs)) Community Edition — versions 6.x

Weakness classification (CWE)

References

security@otrs.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-48209?: CVE-2026-48209 is a high-severity vulnerability in Otrs, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-06-01.
How severe is CVE-2026-48209?: High severity. CVSS v3 base score is 7.1 out of 10.