# CVE-2023-42446

## Summary

- **CVE ID:** CVE-2023-42446
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
- **CWE:** CWE-298
- **Published:** Sep 18, 2023
- **Last Modified:** Mar 13, 2026

## Description

Pow is a authentication and user management solution for Phoenix and Plug-based apps. Starting in version 1.0.14 and prior to version 1.0.34, use of `Pow.Store.Backend.MnesiaCache` is susceptible to session hijacking as expired keys are not being invalidated correctly on startup. A session may expire when all `Pow.Store.Backend.MnesiaCache` instances have been shut down for a period that is longer than a session's remaining TTL. Version 1.0.34 contains a patch for this issue. As a workaround, expired keys, including all expired sessions, can be manually invalidated.

## Affected Products

- pow-auth — pow (>= 1.0.14, < 1.0.34)

## References

- [CNA](https://github.com/pow-auth/pow/security/advisories/GHSA-3cjh-p6pw-jhv9)
- [CNA](https://github.com/pow-auth/pow/issues/713)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 33.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._