CVE-2021-36091

Unautorized access to the calendar appointments

MEDIUM

4.3

CVSS Score

Published: July 26, 2021 at 04:25 AM UTC

Updated: June 17, 2026 at 03:58 AM UTC

1 product affected across 1 vendorOTRS

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Severity

MEDIUM4.3

Exploit prediction

EPSS 0.7%

Description

Agents are able to list appointments in the calendars without required permissions. 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

OTRS · Otrs

95%

6.0.0 ≤ v < 6.0.326.0.1 ≤ v < 6.0.x*7.0.0 ≤ v < 7.0.287.0.x ≤ v < 7.0.276.0.1 7.0.x

Affected range stops below 6.0.32, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.x*, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.27, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.28, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://otrs.com/release-notes/otrs-security-advisory-2021-14/

References (2)

Mailing List

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html

Vendor Advisory

Source: [email protected]

https://otrs.com/release-notes/otrs-security-advisory-2021-14/

CVSS

4.3MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200CWE-863

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