CVE-2017-17091
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.02%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 7.02% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- wordpress/wordpress
- Source
- cve@mitre.org
EPSS 7.0% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/102024Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.1Patch, Release Notes
- https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326cPatch
- 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/8969Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4090
- http://www.securityfocus.com/bid/102024Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.1Patch, Release Notes
- https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326cPatch
- 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/8969Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4090
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.