Operation on a Resource after Expiration or Release Affecting mattermost-redux package, versions <11.4.0
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-JS-MATTERMOSTREDUX-15702176
- published20 Mar 2026
- disclosed16 Mar 2026
- creditJoshua Rogers
Introduced: 16 Mar 2026
NewCVE-2026-1629 (opens in a new tab)How to fix?
Upgrade mattermost-redux to version 11.4.0 or higher.
Overview
mattermost-redux is a Common code (API client, Redux stores, logic, utility functions) for building a Mattermost client
Affected versions of this package are vulnerable to Operation on a Resource after Expiration or Release in the permalink preview process. An attacker can access private channel content after losing channel access by viewing previously cached permalink previews.