CVE-2021-21426

Magento-lts is a long-term support alternative to Magento Community Edition (CE). In magento-lts versions 19.4.12 and prior and 20.0.8 and prior, there is a vulnerability caused by the unsecured deserialization of an object. A patch in versions 19.4.13 and 20.0.9 was back ported from Zend Framework 3. The vulnerability was assigned CVE-2021-3007 in Zend Framework.

• CWE-502

• https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98cThird Party Advisory
• https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98cThird Party Advisory

Published

Apr 21, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-21420vscode-stripe is an extension for Visual Studio Code. A vuln…7.8
• CVE-2021-21421node-etsy-client is a NodeJs Etsy ReST API Client. Applicati…6.5
• CVE-2021-21422mongo-express is a web-based MongoDB admin interface, writte…6.1
• CVE-2021-21423`projen` is a project generation tool that synthesizes proje…8.1
• CVE-2021-21424Symfony is a PHP framework for web and console applications …5.3
• CVE-2021-21425Grav Admin Plugin is an HTML user interface that provides a …9.8
• CVE-2021-21427Magento-lts is a long-term support alternative to Magento Co…7.2
• CVE-2021-21428Openapi generator is a java tool which allows generation of …7
• CVE-2021-21429OpenAPI Generator allows generation of API client libraries,…3.3
• CVE-2021-21430OpenAPI Generator allows generation of API client libraries …5.5
• CVE-2021-21431sopel-channelmgnt is a channelmgnt plugin for sopel. In vers…8.1
• CVE-2021-21432Vela is a Pipeline Automation (CI/CD) framework built on Lin…6.5