CVE-2022-1337

6.5 mediumEPSS 0.9%

The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copies of a proxied image, which allows an authenticated attacker to crash the server via links to very large image files.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWEs: CWE-770, CWE-400
Published: 2022-04-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mattermost:mattermost_server

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-f37q-q7p2-ccfc	Go	github.com/mattermost/mattermost-server/v6	<6.4.2	6.4.2
GO-2022-0595	Go	github.com/mattermost/mattermost-server	all versions	no fix published
GO-2022-0595	Go	github.com/mattermost/mattermost-server/v5	all versions	no fix published
GO-2022-0595	Go	github.com/mattermost/mattermost-server/v6	<6.4.2	6.4.2

References

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

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