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Algorithmic Complexity

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medium advisory

Absinthe GraphQL Fragment Validation Denial-of-Service (CVE-2026-43967)

A denial-of-service vulnerability exists in the Absinthe GraphQL library (versions 1.2.0 to 1.10.1), where an unauthenticated attacker can exhaust server resources by submitting a crafted GraphQL query with a large number of fragment definitions due to the quadratic complexity of fragment name uniqueness validation.

absinthe denial of service graphql algorithmic complexity CVE-2026-43967
2r 1t 1c