CVE-2021-36092: XSS attack using special link in email

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-26 · updated 2026-06-17
Weakness: CWE-79

Description

It's possible to create an email which contains specially crafted link and it can be used to perform XSS attack. This issue affects: OTRS AG ((OTRS)) Community Edition:6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x version 7.0.27 and prior versions; 8.0.x version 8.0.14 and prior versions.

Affected products

OTRS AG OTRS: from 6.0.0 through 6.0.32; from 7.0.0 before 7.0.28; from 8.0.0 before 8.0.15 — fixed in 7.0.28, 8.0.15

How to fix

Upgrade to a fixed version: OTRS AG OTRS 7.0.28, 8.0.15. Check the vendor advisory for mitigations.

References

https://otrs.com/release-notes/otrs-security-advisory-2021-15/
https://otrs.com/release-notes/otrs-security-advisory-2021-15/

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