CVE-2023-45223

Users full name disclosure through Mattermost Boards with Show Full Name Option disabled

MEDIUM

4.3

CVSS Score

Published: November 27, 2023 at 09:06 AM UTC

Updated: June 17, 2026 at 06:28 AM UTC

1 product affected across 1 vendorMattermost

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Severity

MEDIUM4.3

Exploit prediction

EPSS 0.5%

Description

Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards, allowing a member to get the full name of another user even if the Show Full Name option was disabled.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mattermost · Mattermost

95%

v ≤ 7.8.12v ≤ 8.1.38.0.0 ≤ v ≤ 8.1.3

Vendor states this is fixed in 7.8.13 (unaffected)

Vendor states this is fixed in 8.1.4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://mattermost.com/security-updates

References (1)

Vendor Advisory

Source: [email protected]

https://mattermost.com/security-updates

CVSS

4.3MEDIUMMattermost

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200NVD-CWE-noinfo

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