CVE-2023-34001Network attack vector

CAPTCHA bypass via omitted brute_ck parameter

Published Jun 4, 2024 · Updated Apr 28, 2026

CAPTCHA bypass in WP Ghost 5.0.25 and earlier allows remote attackers to evade its math challenge during login attempts. The brute_math_authenticate function accepts an authentication request with the brute_ck CAPTCHA field omitted and continues without validating the math challenge. Unauthenticated network access to a protected login form is sufficient, weakening CAPTCHA-based throttling and permitting repeated credential guesses.

CVSS severity5.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CAPTCHA bypass in WP Ghost 5.0.25 and earlier allows remote attackers to evade its math challenge during login attempts. The brute_math_authenticate function accepts an authentication request with the brute_ck CAPTCHA field omitted and continues without validating the math challenge. Unauthenticated network access to a protected login form is sufficient, weakening CAPTCHA-based throttling and permitting repeated credential guesses.

The record

CVE
CVE-2023-34001
Published
Jun 4, 2024
Updated
Apr 28, 2026
Vendor
Squirrly Limited
Product
WP Ghost
Classifications
CWE-307, CAPEC-554, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=5.0.25 changes=[{"at":"5.0.26","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Squirrly Limited · WP Ghostversion=n/a <=5.0.25 changes=[{"at":"5.0.26","status":"unaffected"}]

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
CAPEC-554Functionality Bypass
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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