CVE-2019-16220

MEDIUM

WordPress <5.2.3 - Open Redirect

Title source: llm

Description

In WordPress before 5.2.3, validation and sanitization of a URL in wp_validate_redirect in wp-includes/pluggable.php could lead to an open redirect if a provided URL path does not start with a forward slash.

References (9)

[Various Sources] https://medium.com/@theodorejackson.us/rediscovering-an-old-vulnerability-cve-2019-16220-d25cc441752f

[Patch, Vendor Advisory] https://core.trac.wordpress.org/changeset/45971

[Patch, Third Party Advisory] https://github.com/WordPress/WordPress/commit/c86ee39ff4c1a79b93c967eb88522f5c09614a28

View Patch ZIP pw:eip

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2019/10/msg00023.html

[Mailing List, Third Party Advisory] https://seclists.org/bugtraq/2020/Jan/8

[Release Notes, Vendor Advisory] https://wordpress.org/news/2019/09/wordpress-5-2-3-security-and-maintenance-release/

[Third Party Advisory] https://wpvulndb.com/vulnerabilities/9863

[Third Party Advisory] https://www.debian.org/security/2020/dsa-4599

[Third Party Advisory] https://www.debian.org/security/2020/dsa-4677

Scores

CVSS v3 6.1

EPSS 0.0082

EPSS Percentile 74.1%

Attack Vector NETWORK

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

Classification

CWE

CWE-601

Status published

Affected Products (4)

wordpress/wordpress < 5.2.3

debian/debian_linux

Timeline

Published Sep 11, 2019

Tracked Since Feb 18, 2026