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CVE-2026-1979

MEDIUM

5.3

Description

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.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

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

Vecteur d'attaqueLOCAL

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie2/6/2026

Derniere modification2/28/2026

Sourcenvd

Observations honeypot0

Produits affectes

mruby:mruby

Faiblesses (CWE)

CWE-119CWE-416

References

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)

Correlations IOC

Aucune correlation enregistree

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