Security readout for executives and security teams
Plain-English summary
CVE-2023-51509 affects the WordPress RegistrationMagic plugin through version 5.2.4.1. It is a reflected cross-site scripting issue that could let an attacker cause script execution in a user’s browser if that user follows a crafted interaction. Business risk is highest for public WordPress sites using this plugin for registration, login, or payments.
Executive priority
Treat this as a high-priority WordPress plugin exposure, especially on public customer-facing sites. It is not confirmed as actively exploited in the provided sources, but the affected workflows can touch user identity and payment-related interactions, making prompt inventory and vendor-guided patching appropriate.
Technical view
The CVE describes CWE-79 improper input neutralization during web page generation in Metagauss RegistrationMagic. CVSS 3.1 is 7.1 high, with network attack vector, low complexity, no privileges required, required user interaction, and changed scope. The source bundle does not provide endpoint-level details or a named fixed version.
Likely exposure
Exposure is likely limited to WordPress installations running RegistrationMagic, package custom-registration-form-builder-with-submission-manager, at versions through 5.2.4.1. Sites exposing registration, login, payment, or form flows to unauthenticated visitors should be prioritized for review.
Exploitation context
The provided sources classify this as reflected XSS and do not state active exploitation. It is not marked CISA KEV in the bundle. The CVSS vector indicates exploitation requires user interaction but no prior authentication, so phishing or link-based delivery is the main concern.
Researcher notes
Evidence is limited to CVE, CVE List V5, and Patchstack references in the bundle. Do not assume exploit availability, endpoint details, or a fixed version without checking vendor or Patchstack advisory text. Validate exposure by plugin presence, version, and externally reachable RegistrationMagic functionality.
Mitigation direction
- Inventory WordPress sites for the RegistrationMagic plugin and installed version.
- Prioritize sites running versions through 5.2.4.1 for remediation review.
- Check Metagauss, WordPress plugin, or Patchstack guidance for the fixed version.
- Update the plugin when vendor guidance identifies a safe release.
- Temporarily disable exposed RegistrationMagic flows if no safe update is available.
- Increase monitoring for suspicious requests to affected form, login, and registration pages.
Validation and detection
- Confirm whether the package custom-registration-form-builder-with-submission-manager is installed.
- Record the installed plugin version on each WordPress instance.
- Verify public routes using RegistrationMagic forms, registration, login, or payment features.
- Check whether any vendor advisory identifies a fixed version or mitigation.
- Review web logs for unusual reflected-XSS-style probes against plugin-managed pages.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2023-51509 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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:R/S:C/C:L/I:L/A:L2.83.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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.