WPS Hide Login < 1.9.1 - Protection Bypass with Referer-Header

published 2021-12-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11829

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 72.2%; EPSS 72.2% chance of exploitation in 30 days, percentile 99.4%
public exploits: 1; Metasploit, plus a Nuclei check

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.

Patch / fix

fixed in 1

wpserveur wps_hide_login 1.9.1

Timeline

2021-10-27 First public exploit (Metasploit auxiliary/scanner/http/wp_wps_hide_login_revealer)
2021-12-06 Published

Exploit prediction

72.18% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit auxiliary/scanner/http/wp_wps_hide_login_revealer WordPress WPS Hide Login Login Page Revealer metasploit auxiliary, normal rank, 2021-10-27
Nuclei template WordPress WPS Hide Login <1.9.1 - Information Disclosure nuclei detection template
wpscan.com https://wpscan.com/vulnerability/15bb711a-7d70-4891-b7a2-c473e3e8b375 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

Unknown WPS Hide Login

Classification

Weakness

CWE-863 Incorrect Authorization

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/15bb711a-7d70-4891-b7a2-c473e3e8b375
exploit, third-party-advisory
wordpress.org /support/topic/bypass-security-issue/
third-party-advisory

Sources

CVE List CVE-2021-24917
NVD CVE-2021-24917

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary