1. Home
  2. CVE Database
  3. CVE-2021-24857
CRITICAL · 9.8

CVE-2021-24857

The ToTop Link WordPress plugin through 1.7.1 passes base64 encoded user input to the unserialize() PHP function, which could lead to PHP Object injection if a plugin installed on the blog has a suita...

Vulnerability Description

The ToTop Link WordPress plugin through 1.7.1 passes base64 encoded user input to the unserialize() PHP function, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
NoceanTotop Link<= 1.7.1

Related Weaknesses (CWE)

CWE-502

References

FAQ

What is CVE-2021-24857?

CVE-2021-24857 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The ToTop Link WordPress plugin through 1.7.1 passes base64 encoded user input to the unserialize() PHP function, which could lead to PHP Object injection if a plugin installed on the blog has a suita...

How severe is CVE-2021-24857?

CVE-2021-24857 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-24857?

Check the references section above for vendor advisories and patch information. Affected products include: Nocean Totop Link.