VULNERABILITY INTELLIGENCE
CVE-2026-76763
CVSS score7.5 HIGH
EPSS probability0.79%
CISA KEVNot currently listed
Published2026-08-31
Last modified2026-10-20
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- secalert@redhat.com: CWE-1284