CVE-2021-21427

Name: CVE-2021-21427
Creator: NVD / NIST
Published: 2021-04-21T21:15:08.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2021-21427 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Magento-lts is a long-term support alternative to Magento Community Edition (CE). A vulnerability in magento-lts versions before 19.4.13 and 20.0.9 potentially allows an administrator unauthorized access to restricted resources. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

Magento-lts is a long-term support alternative to Magento Community Edition (CE). A vulnerability in magento-lts versions before 19.4.13 and 20.0.9 potentially allows an administrator unauthorized access to restricted resources. This is a backport of CVE-2021-21024. The vulnerability is patched in versions 19.4.13 and 20.0.9.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

1.07%

60.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Openmage	Magento	< 19.4.13
Openmage	Magento	>= 20.0.0, < 20.0.9

References

https://github.com/OpenMage/magento-lts/security/advisories/GHSA-fvrf-9428-527mThird Party Advisory
https://github.com/OpenMage/magento-lts/security/advisories/GHSA-fvrf-9428-527mThird Party Advisory

Timeline

Published: Apr 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21427?

How severe is CVE-2021-21427?

CVE-2021-21427 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21427?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21427?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST