CVE-2026-72705
Gravedad CVSS v4.0:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
24/08/2026
Última modificación:
24/08/2026
Descripción
*** Pendiente de traducción *** The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function to a plain definition is rejected because the checker unfolds the definition and observes the call, but passing it to a fixpoint is accepted because higher-order recursive calls through fixpoint arguments are not tracked. This admits a type that is definitionally equal to its own negation, so self-application produces False in purely definitional code, without tactics, axioms, plugins or unsafe flags, and Print Assumptions reports the result as closed under the global context. Fixed in Rocq 9.2.0.
Impacto
Puntuación base 4.0
6.80
Gravedad 4.0
MEDIA
Puntuación base 3.x
6.30
Gravedad 3.x
MEDIA
Referencias a soluciones, herramientas e información
- https://github.com/endrazine/rocq-cve-poc-21683
- https://github.com/rocq-prover/rocq
- https://github.com/rocq-prover/rocq/issues/21683
- https://github.com/rocq-prover/rocq/pull/21684
- https://www.vulncheck.com/advisories/rocq-prover-before-guard-checker-accepts-fixpoint-passed-as-a-higher-order-argument