CVE-2023-40673Network attack vector

Unauthenticated CAPTCHA verification bypass

Published Jun 4, 2024 · Updated Apr 28, 2026

CAPTCHA bypass in cartpauj Cartpauj Register Captcha 1.0.02 and earlier allows remote attackers to evade signup verification. Patchstack has not published the affected function or explained how crafted registration requests defeat the CAPTCHA validation. No authentication or user interaction is required, and successful exploitation permits unverified WordPress account registrations.

CVSS severity6.5
Medium
EPSS probability0.40%
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 cartpauj Cartpauj Register Captcha 1.0.02 and earlier allows remote attackers to evade signup verification. Patchstack has not published the affected function or explained how crafted registration requests defeat the CAPTCHA validation. No authentication or user interaction is required, and successful exploitation permits unverified WordPress account registrations.

The record

CVE
CVE-2023-40673
Published
Jun 4, 2024
Updated
Apr 28, 2026
Vendor
cartpauj
Product
Cartpauj Register Captcha
Classifications
CWE-799, T1190
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 <=1.0.02 changes=[{"at":"2.0.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

cartpauj · Cartpauj Register Captchaversion=n/a <=1.0.02 changes=[{"at":"2.0.0","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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-799Improper Control of Interaction Frequency
T1190Exploit Public-Facing Application

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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