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CVE-2023-40703

Date: November 27, 2023

Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string. 

Language: Go

Severity Score

Related Resources (4)

https://github.com/mattermost/mattermost
https://nvd.nist.gov/vuln/detail/CVE-2023-40703
https://mattermost.com/security-updates
https://www.mend.io/vulnerability-database/CVE-2023-40703

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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