CVE-2026-76763
Io.smallrye/smallrye-graphql: smallrye graphql: unauthenticated denial of service via large exponent float literals
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1284 |
| Vendor | red hat |
| Product | red hat build of quarkus |
| Published | Aug 31, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat build of Quarkus
All versions affected References
Credits
Red Hat would like to thank Arpit Jain for reporting this issue.