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CVE-2020-28032

CriticalPublished

WordPress before 5.5.2 mishandles deserialization requests in wp-includes/Requests/Utility/FilteredIterator.php.

Published: Oct 31, 2020
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

16.1%

Moderate · next 30 days

Percentile: 96.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

WordPress before 5.5.2 mishandles deserialization requests in wp-includes/Requests/Utility/FilteredIterator.php.

Sources

CVE-2020-28032_PoCPoC
PoC for CVE-2020-28032 (It's just a POP chain in WordPress < 5.5.2 for exploiting PHP Object Injection)

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