CVE-2022-1548Network attack vector

Playbook-admin privilege escalation via unchecked membership changes

Published May 3, 2022 · Updated Dec 6, 2024

Improper access control in Mattermost Playbooks 1.25 and earlier allows remote authenticated users to gain playbook-admin privileges. The membership-update authorization logic accepts a member-requested privilege change without enforcing the administrator-only role restriction. A playbook membership and user interaction are required; successful exploitation permits admin-restricted playbook actions, with no reported service interruption.

CVSS severity3.7
Low
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Mattermost Playbooks 1.25 and earlier allows remote authenticated users to gain playbook-admin privileges. The membership-update authorization logic accepts a member-requested privilege change without enforcing the administrator-only role restriction. A playbook membership and user interaction are required; successful exploitation permits admin-restricted playbook actions, with no reported service interruption.

The record

CVE
CVE-2022-1548
Published
May 3, 2022
Updated
Dec 6, 2024
Vendor
Mattermost
Product
Mattermost Playbooks
Classifications
CWE-264, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2022CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Playbooks <=1.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermost Playbooksversion=Playbooks <=1.25

Published CVSS scores

3.7MattermostCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-264Permissions, Privileges, and Access Controls
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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