CVE-2026-43967
Gravedad CVSS v4.0:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
08/05/2026
Última modificación:
08/05/2026
Descripción
*** Pendiente de traducción *** Inefficient Algorithmic Complexity vulnerability in absinthe-graphql absinthe allows unauthenticated denial of service via quadratic fragment-name uniqueness validation.<br />
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&#39;Elixir.Absinthe.Phase.Document.Validation.UniqueFragmentNames&#39;:run/2 iterates over all fragments and for each one calls duplicate?/2, which evaluates Enum.count(fragments, &(&1.name == name)) — a full linear scan of the fragment list. The result is O(N²) comparisons per document, where N is the number of fragment definitions supplied by the caller.<br />
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Because input.fragments is built directly from the GraphQL query body, N is fully attacker-controlled. A minimum-size fragment definition is roughly 16 bytes, so a ~1 MB document carries ~60,000 fragments and forces ~3.6 × 10⁹ comparisons inside this single validation phase. No authentication, schema knowledge, or special configuration is required.<br />
<br />
This issue affects absinthe: from 1.2.0 before 1.10.2.
Impacto
Puntuación base 4.0
8.70
Gravedad 4.0
ALTA