CVE-2026-4054

The record

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 Fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header (e.g. image/png) embedded in an og:image meta tag or Markdown image link.. Mattermost Advisory ID: MMSA-2026-00630

Affected packages

Related vulnerabilities

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• CVE-2026-77411 RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. CWE-754
• CVE-2026-87645 Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed… CWE-754
• CVE-2026-87548 Improper state validation in Installer in Google Chrome prior to 153.0.8010.36 allowed a… CWE-754
• CVE-2026-87532 Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed… CWE-754
• CVE-2026-73314 XenForo before 2.3.13 contains a signature verification logic error in the PayPal REST… CWE-754
• CVE-2026-85014 undici's experimental WebSocketStream client crashes the whole Node.js process when a… CWE-754