Insufficient Session Expiration Affecting vaultwarden package, versions <1.35.5
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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Start learning- Snyk IDSNYK-RUST-VAULTWARDEN-16689354
- published14 May 2026
- disclosed12 May 2026
- creditqaz741wsd856
Introduced: 12 May 2026
NewCVE-2026-43911 (opens in a new tab)How to fix?
Upgrade vaultwarden to version 1.35.5 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Session Expiration due to the failure to invalidate refresh tokens upon security stamp rotation. An attacker can retain unauthorized session access by using a previously obtained refresh token after the user performs sensitive account changes such as password or key updates.