Security readout for executives and security teams
Plain-English summary
CVE-2023-40673 is a captcha bypass in the WordPress Cartpauj Register Captcha plugin through version 1.0.02. It could let unauthenticated users misuse registration protections, increasing unwanted account creation or workflow abuse. The provided sources do not indicate data theft, code execution, or confirmed active exploitation.
Executive priority
Treat as a moderate operational risk for public WordPress registration flows. It is not described as actively exploited, but the no-auth attack profile means exposed sites should be inventoried and remediated promptly through vendor-confirmed guidance.
Technical view
The issue is CWE-799, Improper Control of Interaction Frequency, affecting cartpauj-register-captcha through 1.0.02. CVSS 3.1 is 6.5: network exploitable, low complexity, no privileges, no user interaction, with low integrity and availability impact and no confidentiality impact.
Likely exposure
Exposure is most likely on WordPress sites that have Cartpauj Register Captcha installed and active on registration-related flows. Public registration increases relevance. The bundle does not identify affected CPEs, hosting platforms, or a patched replacement version.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation. The risk comes from unauthenticated, network-reachable functionality misuse rather than a demonstrated public exploit chain in the provided material.
Researcher notes
Evidence is limited to CVE metadata and the Patchstack vulnerability entry. Do not infer broader WordPress impact beyond this plugin. No official fixed version, exploit status, or detailed mitigation is included in the provided bundle.
Mitigation direction
- Inventory WordPress sites for cartpauj-register-captcha and record deployed versions.
- Check vendor or Patchstack guidance for a fixed release or official mitigation.
- Prioritize sites with public user registration or high automated signup risk.
- If no supported fix exists, consider disabling the plugin after business approval.
- Monitor registration spikes, failed captcha patterns, and account abuse indicators.
Validation and detection
- Confirm whether Cartpauj Register Captcha is installed and active.
- Verify the installed plugin version is not through 1.0.02.
- Review whether registration pages rely on this captcha control.
- Check logs for abnormal registration volume or repeated automated attempts.
- Document any compensating controls protecting registration workflows.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-799: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-40673 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Interaction Frequency
Improper Control of Interaction Frequency represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.