CVE-2020-28032

Name: CVE-2020-28032
Creator: NVD / NIST
Published: 2020-11-02T21:15:30.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 16.12%

Last modified Jun 17, 2026

CVE-2020-28032 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. WordPress before 5.5.2 mishandles deserialization requests in wp-includes/Requests/Utility/FilteredIterator.php.. EPSS estimates a 16.12% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

16.12%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	< 5.5.2
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://github.com/WordPress/wordpress-develop/commit/add6bedf3a53b647d0ebda2970057912d3cd79d3Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/Release Notes, Vendor Advisory
https://wpscan.com/vulnerability/10446Third Party Advisory
https://www.debian.org/security/2020/dsa-4784Third Party Advisory
https://github.com/WordPress/wordpress-develop/commit/add6bedf3a53b647d0ebda2970057912d3cd79d3Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/Release Notes, Vendor Advisory
https://wpscan.com/vulnerability/10446Third Party Advisory
https://www.debian.org/security/2020/dsa-4784Third Party Advisory

Timeline

Published: Nov 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28032?

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

How severe is CVE-2020-28032?

CVE-2020-28032 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 16.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28032?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-28032?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST