AUGUST 4, 2026
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Case File

CVE-2021-24857

CRITICAL · CVSS 9.8 EPSS 1.84%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-13 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects WordPress.

CVE
CVE-2021-24857
Severity
CRITICAL
CVSS
9.8
EPSS
1.84%
WordPress

Original NVD 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.