Home/CVE/Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to acc
CVE

CVE-2023-3581

Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to acc

Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.

MEDIUM · CVSS 6.2 EPSS 0.00188
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-346Origin Validation Error
CWE-346Origin Validation Error
▤

Affected Products & Versions

3
mattermost server>= 7.8.0 and < 7.8.7
mattermost server>= 7.9.0 and < 7.9.5
mattermost server>= 7.10.0 and < 7.10.3
▣

Scoring & Timeline

6.2
MEDIUM · CVSS v3.1 · responsibledisclosure@mattermost.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Jul 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://mattermost.com/security-updatesVendor Advisory
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