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EUVD-2026-187607

fkie_cve-2023-42446

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.

GHSA-3cjh-p6pw-jhv9 — Pow Mnesia cache doesn't invalidate all expired keys on startup

Affected: Hex: pow

Use of `Pow.Store.Backend.MnesiaCache` is susceptible to session hijacking as expired keys are not being invalidated correctly on startup. A cache key may become expired when all `Pow.Store.Backend.MnesiaCache` instances have been shut down for a period that is longer than the keys' remaining TTL and the expired key won't be invalidated on startups.

### Workarounds

The expired keys, including all expired sessions, can be manually invalidated by running:

```elixir :mnesia.sync_transaction(fn -> Enum.each(:mnesia.dirty_select(Pow.Store.Backend.MnesiaCache, [{{Pow.Store.Backend.MnesiaCache, :_, :_}, [], [:"$_"]}]), fn {_, key, {_value, expire}} -> ttl = expire - :os.system_time(:millisecond) if ttl < 0, do: :mnesia.delete({Pow.Store.Backend.MnesiaCache, key}) end) end) ```

### References https://github.com/pow-auth/pow/commit/15dc525be03c466daa5d2119ca7acdec7b24ed17 https://github.com/pow-auth/pow/issues/713 https://github.com/pow-auth/pow/pull/714

Most recent entries from all

EUVD-2026-187607

fkie_cve-2023-42446

GHSA-3cjh-p6pw-jhv9 — Pow Mnesia cache doesn't invalidate all expired keys on startup

gsd-2023-42446