CVE-2021-31631

Name: CVE-2021-31631
Creator: NVD / NIST
Published: 2021-12-06T22:15:07.64+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2021-31631 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. b2evolution CMS v7.2.3 was discovered to contain a Cross-Site Request Forgery (CSRF) via the User login page. This vulnerability allows attackers to escalate privileges.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

b2evolution CMS v7.2.3 was discovered to contain a Cross-Site Request Forgery (CSRF) via the User login page. This vulnerability allows attackers to escalate privileges.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.54%

41.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
B2evolution	B2evolution Cms	7.2.3

References

https://gist.github.com/stacksmasher007/76514ab2b782fb4383f1121e6fc19241Exploit, Third Party Advisory
https://gist.github.com/stacksmasher007/76514ab2b782fb4383f1121e6fc19241Exploit, Third Party Advisory

Timeline

Published: Dec 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31631?

b2evolution CMS v7.2.3 was discovered to contain a Cross-Site Request Forgery (CSRF) via the User login page. This vulnerability allows attackers to escalate privileges.

How severe is CVE-2021-31631?

CVE-2021-31631 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31631?

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-2021-31631?

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

Scan your code now

Source: NVD / NIST