CVE-2021-20842

Name: CVE-2021-20842
Creator: NVD / NIST
Published: 2021-11-24T16:15:13.157+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2021-20842 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Cross-site request forgery (CSRF) vulnerability in EC-CUBE 2 series 2.11.0 to 2.17.1 allows a remote attacker to hijack the authentication of Administrator and delete Administrator via a specially crafted web page.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

Cross-site request forgery (CSRF) vulnerability in EC-CUBE 2 series 2.11.0 to 2.17.1 allows a remote attacker to hijack the authentication of Administrator and delete Administrator via a specially crafted web page.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.53%

40.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Ec-Cube	Ec-Cube	>= 2.11.0, <= 2.17.1

References

https://jvn.jp/en/jp/JVN75444925/index.htmlThird Party Advisory
https://www.ec-cube.net/info/weakness/20211111/Exploit, Patch, Vendor Advisory
https://jvn.jp/en/jp/JVN75444925/index.htmlThird Party Advisory
https://www.ec-cube.net/info/weakness/20211111/Exploit, Patch, Vendor Advisory

Timeline

Published: Nov 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20842?

How severe is CVE-2021-20842?

CVE-2021-20842 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20842?

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-2021-20842?

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

Scan your code now

Source: NVD / NIST