Security readout for executives and security teams
Plain-English summary
A WordPress plugin used for schema and structured data can store unsafe script content in versions through 1.23. If an attacker has a low-privileged account and can get a victim to view the affected page, they may run script in that user’s browser.
Executive priority
Treat this as a moderate web security issue. It is not currently supported as actively exploited by the provided sources, but affected public WordPress sites should be remediated during normal security maintenance because stored XSS can compromise trusted user sessions.
Technical view
CVE-2023-51677 is a stored cross-site scripting issue in Magazine3 Schema & Structured Data for WP & AMP through version 1.23. The CVSS 3.1 score is 6.5, with network access, low attack complexity, low privileges, required user interaction, and changed scope.
Likely exposure
Exposure is likely on WordPress sites running schema-and-structured-data-for-wp version 1.23 or earlier, especially where non-admin users can create or modify plugin-controlled content. The source bundle does not identify the exact vulnerable field or permission boundary.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not state active exploitation. Successful abuse requires an authenticated attacker with low privileges and a victim interaction, consistent with stored XSS risk against site users or administrators.
Researcher notes
Evidence confirms stored XSS, affected product, affected versions through 1.23, CWE-79, and CVSS vector. The bundle does not provide exploit details, exact vulnerable parameters, proof-of-concept status, or a named fixed version, so validation should focus on version exposure and vendor guidance.
Mitigation direction
- Inventory WordPress sites for the affected plugin and version.
- Check vendor and Patchstack guidance for a fixed release or supported remediation.
- Update the plugin if a fixed version is available from the vendor.
- Disable or remove the plugin if no safe version is available.
- Limit content-editing privileges to trusted users until remediated.
Validation and detection
- Confirm whether schema-and-structured-data-for-wp is installed on each WordPress site.
- Record the installed version and flag version 1.23 or earlier.
- Review relevant user roles with access to plugin-managed content.
- Check pages using plugin output for unexpected stored scripts.
- Document remediation status and remaining business exceptions.
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-2023-51677 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:L/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:L/UI:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.