Authenticated user could send multiple requests containing a parameter which could fetch a large amount of data and can crash a Mattermost server

published 2022-11-23 3 y ago modified 2026-09-10 1 mo ago also GHSA-v42f-hq78-8c5m , EUVD-2022-7432

cvss: 3.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

A denial-of-service vulnerability in the Mattermost allows an authenticated user to crash the server via multiple requests to one of the API endpoints which could fetch a large amount of data.

Patch / fix

fixed in 2

go github.com/mattermost/mattermost-server 7.1.4, 7.2.1, 7.3.1
Mattermost Mattermost 7.4.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-12-06)

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
go	github.com/mattermost/mattermost-server	<7.1.4 >=7.2.0, <7.2.1 >=7.3.0, <7.3.1	7.1.4 7.2.1 7.3.1

Affected products

Mattermost Mattermost

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

References

mattermost.com /security-updates/
vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2022-4045
advisory
mattermost.com /security-updates
web
pkg.go.dev /github.com/mattermost/mattermost-server
package

Sources

CVE List CVE-2022-4045
GitHub Advisory GHSA-v42f-hq78-8c5m
NVD CVE-2022-4045

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary