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.
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History
Tue, 01 Sep 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Mon, 31 Aug 2026 20:30:00 +0000
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ssvc
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Mon, 31 Aug 2026 16:15:00 +0000
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Redhat build Of Quarkus
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Redhat build Of Quarkus
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Mon, 31 Aug 2026 14:00:00 +0000
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| 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. | |
| Title | Io.smallrye/smallrye-graphql: smallrye graphql: unauthenticated denial of service via large exponent float literals | |
| First Time appeared |
Redhat
Redhat quarkus |
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| Weaknesses | CWE-1284 | |
| CPEs | cpe:/a:redhat:quarkus:3 | |
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Redhat
Redhat quarkus |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-31T19:49:19.257Z
Reserved: 2026-08-19T16:58:05.744Z
Link: CVE-2026-76763
Updated: 2026-08-31T19:49:13.930Z
Status : Awaiting Analysis
Published: 2026-08-31T14:17:23.050
Modified: 2026-09-01T21:03:04.987
Link: CVE-2026-76763
OpenCVE Enrichment
Updated: 2026-08-31T16:00:05Z