CVE-2023-3593

Server crash via a specially crafted markdown input

View on CVE.org

Published Jul 17, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Description

Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.

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	≤ 7.8.6
`0`	affected	≤ 7.9.4
`0`	affected	≤ 7.10.2
`7.8.7`	unaffected	—
`7.9.5`	unaffected	—
`7.10.3`	unaffected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

Vendor Solution

Update Mattermost to versions v7.8.7, v7.9.5, v7.10.3 or higher

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2023-44243	Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.608% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

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

History

Oct 21, 2024 8:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Mattermost Mattermost Server

Weaknesses

Sources

CVE record Updated: Oct 21, 2024, 7:40 PM

Status: PUBLISHED
Assigner: Mattermost
Published: Jul 17, 2023, 3:38 PM
Updated: Oct 21, 2024, 7:40 PM
Reserved: Jul 10, 2023, 3:18 PM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 7:01 AM

Updated: Aug 2, 2024, 7:01 AM

NVD Updated: Jun 17, 2026, 6:14 AM

Status: Modified
Published: Jul 17, 2023, 4:15 PM
Modified: Jun 17, 2026, 6:14 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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