CVE-2026-80051 Denial of service in graphql-go
Attackers can cause a stack overflow and crash the application by sending deeply nested values to the graphql-go library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80051?
CVE-2026-80051 is a medium-severity denial of service vulnerability in graphql-go, published on 25 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
github.com/graphql-go/graphql (GraphQL for Go) through 0.8.1 does not validate that a scalar variable value matches its declared type. The built-in coerceString and coerceBool functions (scalars.go) accept input whose type does not match the declared String, ID, or Boolean scalar instead of raising the request error that the GraphQL specification mandates. In some cases (but not any typical case of JSON sent to a website), a deeply nested value leads to an unrecoverable "fatal error: stack overflow" condition.
Weakness: CWE-1287
Which versions are affected by CVE-2026-80051?
How do I fix CVE-2026-80051?
No fix has been published for CVE-2026-80051 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-80051 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-80051 exists.
Sources
Also known as GHSA-w74q-3pp2-465h.