What is CVE-2022-0904?

CVE-2022-0904 is a medium-severity vulnerability in Mattermost, classified under Out-of-bounds Write. CVSS score: 4.3/10. Published 2022-03-10.

How severe is CVE-2022-0904?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Mattermost

CVE-2022-0904

A stack overflow bug in the document extractor in Mattermost Server in versions up to and including 6.3.2 allows an attacker to crash the server via submitting a maliciously crafted Apple Pages document.

Vulnerability class: Buffer Overflow

Published 2022-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.009 (58.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Mattermost — versions 6.3, 6.2, 6.1
Mattermost Server

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

mattermost.com/security-updates/ (Vendor Advisory)

Frequently asked questions

What is CVE-2022-0904?: CVE-2022-0904 is a medium-severity vulnerability in Mattermost, classified under Out-of-bounds Write. CVSS score: 4.3/10. Published 2022-03-10.
How severe is CVE-2022-0904?: Medium severity. CVSS v3 base score is 4.3 out of 10.