CVE-2026-76763: Red Hat Build Of Quarkus

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

A flaw was found in SmallRye GraphQL. The number scalar coercion for BigInteger does not properly validate the magnitude of float or string inputs. An unauthenticated remote attacker can exploit this by sending a GraphQL query containing a large exponent float literal. This can lead to the allocation of extremely large BigInteger objects, causing CPU exhaustion or an OutOfMemoryError, resulting in a denial of service.

Affected products

• Red Hat Red Hat Build Of Quarkus

Published 2026-08-31. Last modified 2026-09-01.