# Cached page leak

> The CDN cached a logged-in page under a key that left out the cookie, and served one user’s page to another.

## What happens

The CDN cached a logged-in page under a key that left out the cookie, and served one user’s page to another.

## How to prevent it

A cache key that holds the cookie, so a personal page is never shared.

## Components it hits

[CDN](https://wiki.playquorum.dev/components/cdn.md)

## Facts

SEV1 Cached page leak
- **First Era:** [Series A](https://wiki.playquorum.dev/eras/series-a.md)
- **Starts at:** SEV1
- **Escalates to:** SEVnull
- **Lasts:** 1.5 min

## See also

- [Incidents](https://wiki.playquorum.dev/incidents.md)

Source: https://wiki.playquorum.dev/incidents/page-leak