CVE-2025-21088

WebApp crash via improper validation of proto style in attachments

State: Published
Severity: 6.5 Medium
Published: Jan 15, 2025
Updated: Jan 15, 2025
Reserved: Jan 15, 2025

Description

Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate the style of proto supplied to an action's style in post.props.attachments, which allows an attacker to crash the frontend via crafted malicious input.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	Mattermost

Weaknesses

CWE-704 Incorrect Type Conversion or Cast

Affected Products

Product	Versions
MattermostMattermost	10.2.0Affected 9.11.0 through 9.11.5Affected 10.0.0 through 10.0.3Affected 10.1.0 through 10.1.3Affected 10.3.0Not affected 10.2.1Not affected 9.11.6Not affected 10.0.4Not affected 10.1.4Not affected

References

https://mattermost.com/security-updates

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