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Login No Captcha reCAPTCHA <= 1.6.11 — CAPTCHA Bypass via Whitelisted IP Address Spoofing

CVE-2022-2913Published · Updated

Action summary

Affected: ≤1.6.11Update to 1.7 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-285 Improper Authorization
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Login No Captcha reCAPTCHA login-recaptcha

  1. Affected≤ 1.6.11
  2. Patched in1.7

Update to 1.7 or newer.

You are affected if you run ≤ 1.6.11. Version 1.7 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Login No Captcha reCAPTCHA.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.7, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Login No Captcha reCAPTCHA to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Daniel Ruf.

The Login No Captcha reCAPTCHA plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.6.11. This is due to the whitelisted IP address functionality relying on user-supplied IP addresses from an HTTP Header. If an attacker can gain access to a whitelisted IP address they can spoof the request to come from one of those IP addresses using an HTTP header which would bypass any restrictions.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Login No Captcha reCAPTCHA

All 2
More vulnerabilities in Login No Captcha reCAPTCHA
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via PHP_SELF
≤1.8.0Update to 1.8.1
CVE-2026-2374

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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