CVE-2021-24356

Public Exploit
Simple 301 Redirects by BetterLinks - 2.0.0 – 2.0.3 - Arbitrary Plugin Activation

Description

In the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4, a lack of capability checks and insufficient nonce check on the AJAX action, simple301redirects/admin/activate_plugin, made it possible for authenticated users to activate arbitrary plugins installed on vulnerable sites.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 34.27% Top 5%
Third-Party Advisory wpscan.com Third-Party Advisory wordfence.com
Affected: Unknown Simple 301 Redirects by BetterLinks
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/blog/2021/05/severe-vulnerabilities-patched-in-simple-301-redirects-by-betterlinks-plugin/ third party advisory exploit
https://wpscan.com/vulnerability/be356530-5e00-4f27-8177-b80f3c1ae6e8 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-24356?
CVE-2021-24356 has been scored as a high severity vulnerability.
How to fix CVE-2021-24356?
To fix CVE-2021-24356, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24356 being actively exploited in the wild?
It is possible that CVE-2021-24356 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~34% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24356?
CVE-2021-24356 affects Unknown Simple 301 Redirects by BetterLinks.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.