CVE-2021-24857

PoC —

CVSS 3.1

9.8 critical

EPSS

2%p78

Published

Dec 13, 2021 (Dec 13, 2021)

Modified

Jun 17, 2026

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.

Vendors: nocean
Products: totop link
Ecosystems: WordPress
Weakness: CWE-502
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.8%)

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