Memory Allocation with Excessive Size Value Affecting github.com/mattermost/mattermost/server/public package, versions <0.1.22
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERPUBLIC-15681973
- published18 Mar 2026
- disclosed16 Mar 2026
- creditUnknown
Introduced: 16 Mar 2026
CVE-2026-26246 Â (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost/server/public to version 0.1.22 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the PSD file preview. An attacker can exhaust server memory resources by uploading a specially crafted PSD file, potentially leading to a denial of service.