CVE-2024-29977

MEDIUM EPSS 19.3%

Published Aug 1, 20241y ago · Modified Jun 17, 20262w ago

4.3 CVSS 3.1

Medium

Published Aug 1, 2024 1y ago

Last Modified Jun 17, 2026 2w ago

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts

CVSS Details

Base Score

4.3

Exploitability

2.8

Impact

1.4

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality None

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

19.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-284

Affected Products 2

Vendor	Product	Version	Range
mattermost	mattermost	*	≥9.5.0 – <9.5.7
mattermost	mattermost	9.9.0	any

References 1

mattermost.com https://mattermost.com/security-updates

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.