cbcvebase.
CVE-2021-24917
published 2021-12-06

CVE-2021-24917: The WPS Hide Login WordPress plugin before 1.9.1 has a bug which allows to get the secret login page by setting a random referer string and making a request to…

PriorityP272high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EXPLOIT
EPSS
71.53%
99.3th percentile
The WPS Hide Login WordPress plugin before 1.9.1 has a bug which allows to get the secret login page by setting a random referer string and making a request to /wp-admin/options.php as an unauthenticated user.

Affected

1 ranges
VendorProductVersion rangeFixed in
wpserveurwps_hide_login< 1.9.11.9.1

Detection & IOCsextracted from sources · hover to see the quote

url/wp-admin/options.php
path/wp-admin/options.php
commandGET /wp-admin/options.php HTTP/1.1 Host: {{Hostname}} Referer: something
  • Send an unauthenticated GET request to /wp-admin/options.php with any arbitrary Referer header value; a redirect response containing 'redirect_to=%2Fwp-admin%2F<something>&reauth=1' in the Location header reveals the hidden login page path.
  • In the HTTP response Location header, look for the pattern 'redirect_to=%2Fwp-admin%2F<value>&reauth=1' — the <value> segment discloses the secret login page path configured by WPS Hide Login.
  • A successful exploit response Location header will NOT contain 'wp-login.php', distinguishing the hidden login path from the default WordPress login.
  • The vulnerability affects WPS Hide Login plugin versions <= 1.9 (before 1.9.1); scan for this plugin version on WordPress sites as a prioritisation signal.
  • ·The Referer header value is arbitrary — any random string triggers the bypass; no specific Referer value is required for exploitation.
  • ·The exploit is a single unauthenticated GET request; no authentication, session, or prior enumeration is needed, making it trivially scriptable at scale.

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
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