CVE-2026-1979

Estado: AnalizadaBaja (1.9)—

A flaw has been found in mruby up to 3.4.0. This affects the function mrb_vm_exec of the file src/vm.c of the component JMPNOT-to-JMPIF Optimization. Executing a manipulation can lead to use after free. The attack needs to be launched locally. The exploit has been published and may be used. This patch is called e50f15c1c6e131fa7934355eb02b8173b13df415. It is advisable to implement a patch to correct this issue.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 1.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mruby — Mruby

CWE

CWE-119, CWE-416

Referencias

JSON original (NVD)

Mostrar

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          "value": "CWE-119"
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          "value": "CWE-416"
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    {
      "lang": "en",
      "value": "A flaw has been found in mruby up to 3.4.0. This affects the function mrb_vm_exec of the file src/vm.c of the component JMPNOT-to-JMPIF Optimization. Executing a manipulation can lead to use after free. The attack needs to be launched locally. The exploit has been published and may be used. This patch is called e50f15c1c6e131fa7934355eb02b8173b13df415. It is advisable to implement a patch to correct this issue."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en mruby hasta la versión 3.4.0. Esto afecta a la función mrb_vm_exec del archivo src/vm.c del componente Optimización JMPNOT-a-JMPIF. La ejecución de una manipulación puede conducir a un uso después de liberar. El ataque debe lanzarse localmente. El exploit ha sido publicado y puede ser utilizado. Este parche se llama e50f15c1c6e131fa7934355eb02b8173b13df415. Es aconsejable implementar un parche para corregir este problema."
    }
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