CVE-2023-45223

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

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Published Nov 27, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

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 Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mattermost

Mattermost

unaffected

Version	Status	Constraints
`0`	affected	≤ 7.8.12
`0`	affected	≤ 8.1.3
`7.8.13`	unaffected	—
`8.1.4`	unaffected	—

Configuration 1 [-]

OR	cpe:2.3:a:mattermost:mattermost::::::::
	cpe:2.3:a:mattermost:mattermost::::::::

No data.

No data available yet.

Remediation

Vendor Solution

Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2023-3003	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.
Github GHSA	GHSA-p5pr-vm3j-jxxf	Mattermost Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.506% probability within 30 days)

Key SSVC decision points have not yet been added.

References

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

History

No history.

Subscriptions

Mattermost Mattermost

Weaknesses

Sources

CVE record Updated: Aug 2, 2024, 8:14 PM

Status: PUBLISHED
Assigner: Mattermost
Published: Nov 27, 2023, 9:06 AM
Updated: Aug 2, 2024, 8:14 PM
Reserved: Nov 20, 2023, 12:06 PM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 6:28 AM

Status: Modified
Published: Nov 27, 2023, 10:15 AM
Modified: Jun 17, 2026, 6:28 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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