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CVE-2026-1979

MEDIUM

5.3

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.15.3

SeveridadeMEDIUM

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

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado2/6/2026

Ultima modificacao2/28/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

mruby:mruby

Fraquezas (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)

Correlacoes IOC

Sem correlacoes registradas

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