What’s Vulnerable › Vulnerabilities

CVE-2021-21443: Unautorized listing of the customer user emails

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% 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-200

Description

Agents are able to list customer user emails without required permissions in the bulk action screen. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.

Affected products

• OTRS AG OTRS: from 6.0.0 through 6.0.32; from 7.0.0 through 7.0.27

References

• https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
• https://otrs.com/release-notes/otrs-security-advisory-2021-13/
• https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
• https://otrs.com/release-notes/otrs-security-advisory-2021-13/

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