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Mattermost allows attackers access to posts in channels they are not a member of

Moderate severity GitHub Reviewed Published Feb 29, 2024 to the GitHub Advisory Database • Updated Feb 29, 2024

Package

gomod github.com/mattermost/mattermost/server/v8 (Go)

Affected versions

>= 9.3.0, < 9.3.1
>= 9.2.0, < 9.2.5
< 8.1.9

Patched versions

9.3.1
9.2.5
8.1.9

Description

Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, and 9.3.0 fail to sanitize the metadata on posts containing permalinks under specific conditions, which allows an authenticated attacker to access the contents of individual posts in channels they are not a member of.

References

Published by the National Vulnerability Database Feb 29, 2024
Published to the GitHub Advisory Database Feb 29, 2024
Reviewed Feb 29, 2024
Last updated Feb 29, 2024

Severity

Moderate
4.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CVE ID

CVE-2024-1942

GHSA ID

GHSA-hwjf-4667-gqwx

Source code

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