What is CVE-2021-21395?

CVE-2021-21395 is a medium-severity vulnerability in Openmage Magento, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.2/10. Published 2023-01-27.

How severe is CVE-2021-21395?

Medium severity. CVSS v3 base score is 4.2 out of 10.

CSRF in Openmage Magento

CVE-2021-21395

Magneto LTS (Long Term Support) is a community developed alternative to the Magento CE official releases. Versions prior to 19.4.22 and 20.0.19 are vulnerable to Cross-Site Request Forgery. The password reset form is vulnerable to CSRF between the time the reset password link is clicked and user submits new password. This issue is patched in versions 19.4.22 and 20.0.19. There are no workarounds.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2023-01-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.8th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Openmage Magento
Openmage Magento-Lts — versions < 19.4.22, >= 20.0.0, < 20.0.19

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

github.com/OpenMage/magento-lts/security/advisories/GHSA-r3c9-9j5q-pwv4 (Third Party Advisory)
hackerone.com/reports/1086752 (Exploit, Third Party Advisory)
packagist.org/packages/openmage/magento-lts (Third Party Advisory)

Frequently asked questions

What is CVE-2021-21395?: CVE-2021-21395 is a medium-severity vulnerability in Openmage Magento, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.2/10. Published 2023-01-27.
How severe is CVE-2021-21395?: Medium severity. CVSS v3 base score is 4.2 out of 10.