Insufficient Session Expiration Affecting envoyproxy/envoy package, versions [,1.32.10)[1.33.0,1.33.7)[1.34.0,1.34.5)[1.35.0,1.35.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-ENVOYPROXYENVOY-12485436
- published4 Sept 2025
- disclosed3 Sept 2025
- creditUnknown
Introduced: 3 Sep 2025
CVE-2025-55162 (opens in a new tab)How to fix?
Upgrade envoyproxy/envoy to version 1.32.10, 1.33.7, 1.34.5, 1.35.1 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Session Expiration due to improper handling of cookie deletion in the OAuth2 filter process. An attacker can maintain access to a user's session by leveraging the failure to clear session cookies when logging out, which may result in unauthorized access to user accounts and data by subsequent users of the same browser.