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Vulnerability record · CVE-2020-28036 · published 2 November 2020

CVE-2020-28036: Wordpress missing authorization vulnerability

Wordpress · Wordpress

wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.

9.8 CVSS 3.1 Critical EPSS 5.2% · top 7.8% CWE-862 · Missing authorization
9.8CVSS 3.1 base score, v2 7.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/WordPress/wordpress-develop/commit/c9e6b98968025b1629015998d12c3102165a7d32 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQ
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/10449 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory
https://github.com/WordPress/wordpress-develop/commit/c9e6b98968025b1629015998d12c3102165a7d32 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQ
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/10449 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-28036), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.