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CVE-2021-21443

Unautorized listing of the customer user emails

3.5 LowFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.82%Up 0.4 points since Jul 26, 2021
90%50%10%1%

What each source reports

CVE List Score used 3.5

Unautorized listing of the customer user emails

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.

Record
CVE-2021-21443
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
EUVDEUVD-2021-8717 3.5

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.

Record
EUVD-2021-8717
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-8cr8-7h2h-c8f7 4.3

Agents are able to list customer user emails without required permissions in the bulk action...

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.

Record
GHSA-8cr8-7h2h-c8f7
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
NVD 3.5

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.

Record
CVE-2021-21443
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 4.3

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.

Record
CVE-2021-21443
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2021-21443 4.3

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.

Record
DEBIAN-CVE-2021-21443
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2021-21443 3.5

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.

Record
UBUNTU-CVE-2021-21443
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
otrs2
Debian:11
 before 6.0.32-6, plus listed versions
2.0.4p01-102.0.4p01-112.0.4p01-122.0.4p01-132.0.4p01-14
Show 45 moreShow less
2.0.4p01-14.12.0.4p01-152.0.4p01-162.0.4p01-172.0.4p01-182.0.4p01-62.0.4p01-72.0.4p01-82.0.4p01-92.0.99beta1-12.0.99beta1-22.1.1-12.1.3-12.1.4-12.1.4-22.1.5-12.1.5-22.1.5-32.1.6-12.1.7-12.1.7-22.2.0~beta2-12.2.0~beta3-12.2.1-12.2.2-12.2.3-12.2.4-12.2.5-12.2.5-22.2.6-12.2.7-12.2.7-22.2.7-2lenny12.2.7-2lenny22.2.7-2lenny32.2.7-32.3.2-12.3.2-22.3.3-12.3.4-12.3.4-22.3.4-32.3.4-42.3.4-52.3.4-6
6.0.32-6
otrs2
Debian:10
From an advisory covering 32 CVEs
 before 6.0.16-2+deb10u1, plus listed versions
2.0.4p01-102.0.4p01-112.0.4p01-122.0.4p01-132.0.4p01-14
Show 45 moreShow less
2.0.4p01-14.12.0.4p01-152.0.4p01-162.0.4p01-172.0.4p01-182.0.4p01-62.0.4p01-72.0.4p01-82.0.4p01-92.0.99beta1-12.0.99beta1-22.1.1-12.1.3-12.1.4-12.1.4-22.1.5-12.1.5-22.1.5-32.1.6-12.1.7-12.1.7-22.2.0~beta2-12.2.0~beta3-12.2.1-12.2.2-12.2.3-12.2.4-12.2.5-12.2.5-22.2.6-12.2.7-12.2.7-22.2.7-2lenny12.2.7-2lenny22.2.7-2lenny32.2.7-32.3.2-12.3.2-22.3.3-12.3.4-12.3.4-22.3.4-32.3.4-42.3.4-52.3.4-6
6.0.16-2+deb10u1
otrs2
Ubuntu:16.04:LTS
 All versions, plus listed versions
4.0.10-15.0.1-15.0.1-25.0.2-15.0.3-15.0.5-15.0.6-15.0.7-1
 None known
otrs2
Ubuntu:18.04:LTS
 All versions, plus listed versions
5.0.23-15.0.24-16.0.1-16.0.2-16.0.3-16.0.4-16.0.5-1
 None known
otrs2
Ubuntu:20.04:LTS
 All versions, plus listed versions
6.0.20-16.0.23-26.0.24-16.0.25-16.0.25-26.0.25-36.0.26-1
 None known
otrs2
Ubuntu:22.04:LTS
 All versions, plus listed versions
6.0.32-66.1.2-16.2.1-16.2.2-2
 None known

History

History
RecordedChangedSources
affected, facts
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-21443 is a low vulnerability (CVSS 3.5) in Otrs, published July 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.82%, the 57th percentile. Fixed in otrs2 6.0.32-6.

References

This page doesn't list everything

Left out here: 371 versions. The JSON record has them.

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