GitHub Advisoryadvisory · Go

GHSA-9fpw-c9x7-cv3j Mattermost allows remote actor to set arbitrary RemoteId values for synced users

MEDIUM Published 2024-08-01 Modified 2025-07-09 Official page ↗
Aliases
CVE-2024-41926
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-284, CWE-346
Reviewed
2024-08-02

Affected packages

• Go github.com/mattermost/mattermost/server/v8: >= 9.5.0, < 9.5.7 → fixed in 9.5.7 • Go github.com/mattermost/mattermost/server/v8: >= 9.9.0, < 9.9.1 → fixed in 9.9.1 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20240604093018-5114c3b7cdb8 → fixed in 8.0.0-20240604093018-5114c3b7cdb8 • Go github.com/mattermost/mattermost: < 5.3.2-0.20240604093018-5114c3b7cdb8 → fixed in 5.3.2-0.20240604093018-5114c3b7cdb8

Description

Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.

Related

Alias · CVE (1)

  • CVE-2024-41926 Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs,… vulnerability

Weakness · CWE (2)

  • CWE-284 Improper Access Control weakness
  • CWE-346 Origin Validation Error weakness

References