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Vulnerability record · CVE-2017-17091 · published 2 December 2017

CVE-2017-17091: Wordpress vulnerability

Wordpress · Wordpress

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.

8.8 CVSS 3.0 High EPSS 7.0% · top 6.0% CWE-330 · CWE-330
8.8CVSS 3.0 base score, v2 6.5
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/102024 Third Party AdvisoryVDB Entry
https://codex.wordpress.org/Version_4.9.1 PatchRelease Notes
https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c Patch
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/ Release Notes
https://wpvulndb.com/vulnerabilities/8969 Third Party AdvisoryVDB Entry
https://www.debian.org/security/2018/dsa-4090
http://www.securityfocus.com/bid/102024 Third Party AdvisoryVDB Entry
https://codex.wordpress.org/Version_4.9.1 PatchRelease Notes
https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c Patch
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/ Release Notes
https://wpvulndb.com/vulnerabilities/8969 Third Party AdvisoryVDB Entry
https://www.debian.org/security/2018/dsa-4090

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-17091), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.