What’s Vulnerable › Vulnerabilities

CVE-2017-17091

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-12-02 · updated 2026-06-17
• Weakness: CWE-330

Description

wp-admin/user-new.php in WordPress before 4.9.1 sets the newbloguser key to a string that can be directly derived from the user ID, which allows remote attackers to bypass intended access restrictions by entering this string.

Affected products

• WordPress: through 4.9

References

• http://www.securityfocus.com/bid/102024
• https://codex.wordpress.org/Version_4.9.1
• https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c
• https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html
• https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/
• https://wpvulndb.com/vulnerabilities/8969
• https://www.debian.org/security/2018/dsa-4090
• http://www.securityfocus.com/bid/102024
• https://codex.wordpress.org/Version_4.9.1
• https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c
• https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html
• https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/

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