CVE-2026-1979

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-119CWE-416

Affected software

VendorProductVersions
n/amruby3.0; 3.1; 3.2; 3.3; 3.4.0

References

Timeline

Published
Feb 6, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-197908.8A vulnerability was identified in Tenda G0 up to 20260625. This issue affects the function formSetPortMirror of the file /goform/module of tCVE-2026-197918.8A weakness has been identified in Tenda G0 up to 20260625. The affected element is the function addStaticRoute of the file /goform/module ofCVE-2026-197928.8A security flaw has been discovered in Tenda G0 up to 20260625. Impacted is the function setPortMapping of the file /goform/module of the coCVE-2026-197947.2The WP-Stats plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.56 due to insufficienCVE-2026-197956.2Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A maliciousCVE-2026-197967.2The Listdom: AI-powered Business Directory with Classifieds Ads Listings plugin for WordPress is vulnerable to Stored Cross-Site Scripting vCVE-2026-197976.1The User Access Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab_group_section' parameter in all veCVE-2026-197984.3The Wp Map Block plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the set_statusCVE-2026-19805.3The WPBookit plugin for WordPress is vulnerable to unauthorized data disclosure due to a missing authorization check on the 'get_customer_liCVE-2026-198004.9The Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to SQL Injection via tCVE-2026-198014.3The BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP plugin for WordPress is vulnerable to authorizationCVE-2026-198024.3The Checkout Custom Fields Builder for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and inc
CVE-2026-1979: Medium severity, CVSS 5.5 | Vulnix