Backstage - Customizer Demo Access: privilege escalation
Backstage - Customizer Demo Access
Privilege escalation in the Backstage - Customizer Demo Access component. Threat level: High (CVSS 7.5).
Who is affected
This vulnerability affects: Backstage - Customizer Demo Access. If you use this component on your site, check the version and update it as soon as possible.
How dangerous
Rating: High, CVSS 7.5 out of 10. It is worth acting before the flaw is exploited.
What this flaw is
Privilege escalation lets a low-privileged user (e.g. a subscriber) raise their level to administrator.
An ordinary, insignificant account becomes one with full power over the site, opening the way to further attacks.
Score breakdown (CVSS vector)
What the CVSS 7.5 rating means in practice:
- The attack can be carried out remotely, over the internet.
- No login or account required.
- Requires no action from the victim.
- At risk: integrity (data can be altered).
Weakness class: CWE-269.
What to do
- Update the vulnerable component (Backstage - Customizer Demo Access) to the latest version.
- If a patch is not out yet, temporarily disable the vulnerable element.
- Check whether the site has already been attacked: unusual files, new administrator accounts, redirects.
- Make a backup before you start making changes.
Does this flaw affect your site?
We will run a free audit: we check versions, plugins, and configuration, and tell you plainly whether you are safe.
Request a free audit →