Microsoft advisory for CVE-2026-1979
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-1979. This page also shows what EchelonGraph holds for CVE-2026-1979, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products5
- azl3 nghttp2 1.61.0-2 on Azure Linux 3.0
- azl3 rust 1.75.0-24 on Azure Linux 3.0
- azl3 rust 1.90.0-3 on Azure Linux 3.0
- cbl2 nghttp2 1.57.0-2 on CBL Mariner 2.0
- cbl2 rust 1.72.0-13 on CBL Mariner 2.0
🧭 EchelonGraph on CVE-2026-1979
- EchelonGraph score
- 5.5 MEDIUM
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
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.
Published by VulDB, the CVE Numbering Authority that assigned CVE-2026-1979, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).