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CVE-2025-21088

WebApp crash via improper validation of proto style in attachments PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Mattermost / Mattermostaffected 10.2.0; affected 9.11.0 through 9.11.5; affected 10.0.0 through 10.0.3; affected 10.1.0 through 10.1.3; unaffected 10.3.0; unaffected 10.2.1; unaffected 9.11.6; unaffected 10.0.4; unaffected 10.1.4

CWE

CWE-704

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.