Summary
Backport for CVE-2021-21024 Blind SQLi from Magento 2
Impact
This vulnerability allows an administrator unauthorized access to restricted resources.
We fixed a vulnerability in the MySQL adapter to prevent SQL injection attacks. This is a backport of CVE-2021-21024 https://helpx.adobe.com/security/products/magento/apsb21-08.html.
Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access. Typical impact: data disclosure or modification.
CVE-2021-21427 has a CVSS score of 9.1 (Critical). The vector is network-reachable, high privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (19.4.13, 20.0.9); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
Has the problem been patched? What versions should users upgrade to?
v20.0.9 v19.4.13
Frequently Asked Questions
- What is CVE-2021-21427? CVE-2021-21427 is a critical-severity SQL injection vulnerability in openmage/magento-lts (composer), affecting versions <= 19.4.12. It is fixed in 19.4.13, 20.0.9. Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access.
- How severe is CVE-2021-21427? CVE-2021-21427 has a CVSS score of 9.1 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of openmage/magento-lts are affected by CVE-2021-21427? openmage/magento-lts (composer) versions <= 19.4.12 is affected.
- Is there a fix for CVE-2021-21427? Yes. CVE-2021-21427 is fixed in 19.4.13, 20.0.9. Upgrade to this version or later.
- Is CVE-2021-21427 exploitable, and should I be worried? Whether CVE-2021-21427 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2021-21427 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2021-21427?
- Upgrade
openmage/magento-ltsto 19.4.13 or later - Upgrade
openmage/magento-ltsto 20.0.9 or later
- Upgrade