CVE-2017-5493

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

• CWE-338

• http://www.debian.org/security/2017/dsa-3779
• http://www.openwall.com/lists/oss-security/2017/01/14/6Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/95401
• http://www.securitytracker.com/id/1037591
• https://codex.wordpress.org/Version_4.7.1Release Notes, Vendor Advisory
• https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4Patch
• https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/Vendor Advisory
• https://wpvulndb.com/vulnerabilities/8721
• http://www.debian.org/security/2017/dsa-3779
• http://www.openwall.com/lists/oss-security/2017/01/14/6Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/95401
• http://www.securitytracker.com/id/1037591
• https://codex.wordpress.org/Version_4.7.1Release Notes, Vendor Advisory
• https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4Patch
• https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/Vendor Advisory
• https://wpvulndb.com/vulnerabilities/8721

Published

Jan 15, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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