CVE Catalog

CVE-2026-76763

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.79%

56th percentile - higher than 56% of all known CVEs

Summary

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 send a GraphQL query with a large exponent float literal, leading to allocation of extremely large BigInteger objects, causing CPU exhaustion or OutOfMemoryError, resulting in denial of service.

Risk Assessment

The attack can cause service unavailability (DoS) by overloading server resources.

Recommendation

Apply patches provided by SmallRye GraphQL vendor or restrict access to GraphQL endpoints.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS