CVE-2026-84796 Craft CMS 5.0.0-RC1 before 5.10.11 GraphQL Entry Mutation Site Scope Bypass
Attackers with site-scoped tokens can bypass site restrictions to read, modify, or delete entries across unauthorized sites in Craft CMS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84796?
CVE-2026-84796 is a high-severity missing authorization vulnerability in craftcms cms, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Craft CMS versions before 5.10.11 contain a site scope bypass vulnerability in GraphQL entry mutation resolvers that fail to validate siteId through ArgumentManager::prepareArguments(). Attackers with tokens scoped to one site can read, modify, or delete entries across unauthorized sites by passing siteId directly in mutation arguments.
Weakness: CWE-639
Which versions are affected by CVE-2026-84796?
How do I fix CVE-2026-84796?
No fix has been published for CVE-2026-84796 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-84796 being exploited?
There is no known exploitation of CVE-2026-84796 in the wild and no public exploit code.
Sources
Also known as GHSA-cjw5-pjp4-3chw.