CVEvulnerability

CVE-2020-28039

9.1 CRITICAL Published 2020-11-02 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2020-11-02
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 2.0 ([email protected]): 6.4 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:P

Description

is_protected_meta in wp-includes/meta.php in WordPress before 5.5.2 allows arbitrary file deletion because it does not properly determine whether a meta key is considered protected.

Affected configurations

• wordpress wordpress (< 5.5.2) • debian debian linux 9.0 • debian debian linux 10.0 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 20.04

References

https://github.com/WordPress/wordpress-develop/commit/d5ddd6d4be1bc9fd16b7796842e6fb26315705ad Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/ lists.fedoraproject.org
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release Notes, Vendor Advisory
https://wpscan.com/vulnerability/10452 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory
https://github.com/WordPress/wordpress-develop/commit/d5ddd6d4be1bc9fd16b7796842e6fb26315705ad Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/ lists.fedoraproject.org
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release Notes, Vendor Advisory
https://wpscan.com/vulnerability/10452 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory