What is CVE-2024-1952?

CVE-2024-1952 is a low-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 3.1/10. Published 2024-02-29.

How severe is CVE-2024-1952?

Low severity. CVSS v3 base score is 3.1 out of 10.

Information disclosure in Mattermost

CVE-2024-1952

Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.

Vulnerability class: Information Disclosure

Published 2024-02-29 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.004 (28.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Mattermost — versions 8.1.0, 9.4, 8.1.9
Mattermost Server

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

mattermost.com/security-updates (Vendor Advisory)

Frequently asked questions

What is CVE-2024-1952?: CVE-2024-1952 is a low-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 3.1/10. Published 2024-02-29.
How severe is CVE-2024-1952?: Low severity. CVSS v3 base score is 3.1 out of 10.