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CVE-2026-1979

MEDIUM

5.3

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.15.3

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Vector de ataqueLOCAL

ComplejidadLOW

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado2/6/2026

Ultima modificacion2/28/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

mruby:mruby

Debilidades (CWE)

CWE-119CWE-416

Referencias

https://github.com/mruby/mruby/(cna@vuldb.com)

https://github.com/mruby/mruby/issues/6701(cna@vuldb.com)

https://github.com/mruby/mruby/issues/6701#issue-3802609843(cna@vuldb.com)

https://github.com/sysfce2/mruby/commit/e50f15c1c6e131fa7934355eb02b8173b13df415(cna@vuldb.com)

https://vuldb.com/?ctiid.344501(cna@vuldb.com)

https://vuldb.com/?id.344501(cna@vuldb.com)

https://vuldb.com/?submit.743377(cna@vuldb.com)

Correlaciones IOC

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