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Vulnerability DatabaseCVE-2026-1979

CVE-2026-1979: 
NixOS vulnerability analysis and mitigation

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.

Source: NVD

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-21010HIGH7.8
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NoNoApr 13, 2026
CVE-2026-21012MEDIUM6.8
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CVE-2026-21011MEDIUM5.4
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CVE-2026-21008MEDIUM5.1
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CVE-2026-21009MEDIUM4.1
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NoNoApr 13, 2026

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