What is CVE-2024-36257?

CVE-2024-36257 is a low-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 2.7/10. Published 2024-07-03.

How severe is CVE-2024-36257?

Low severity. CVSS v3 base score is 2.7 out of 10.

Is CVE-2024-36257 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mattermost

CVE-2024-36257

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.

EPSS: 0.003 (22.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

Affected products

Mattermost — versions 9.8.0, 9.5.0, 9.9.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2024-36257?: CVE-2024-36257 is a low-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 2.7/10. Published 2024-07-03.
How severe is CVE-2024-36257?: Low severity. CVSS v3 base score is 2.7 out of 10.
Is CVE-2024-36257 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.