Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in a WordPress YouTube embedding plugin. A user with Contributor-level access could save unsafe shortcode options that later run script in another visitor's browser. The public sources do not provide a CVSS score or confirmed exploitation.
Executive priority
Prioritize remediation for internet-facing WordPress sites with multiple content contributors. Business urgency is moderate because exploitation needs authenticated publishing access, but successful stored XSS could compromise administrator sessions or site trust.
Technical view
YouTube Embed, Playlist and Popup by WpDevArt before 2.3.9 failed to escape, validate, or sanitize some shortcode options. The issue is CWE-79 authenticated stored XSS, reachable by Contributor or higher roles through shortcode-controlled content.
Likely exposure
Exposure is likely limited to WordPress sites running this plugin below 2.3.9 where Contributor or higher users can create or edit shortcode content. Public sources do not identify specific hosting platforms, themes, or configurations beyond the plugin and role requirement.
Exploitation context
The source bundle marks CISA KEV as false and provides no cited evidence of active exploitation. The attack requires authenticated content creation or editing privileges, but stored XSS can affect administrators or site visitors who view the affected content.
Researcher notes
The public record is concise: no CVSS vector, no exploit status, and no detailed affected shortcode option list are included in the provided sources. Treat the version boundary and role requirement as the primary verified facts.
Mitigation direction
- Upgrade the plugin to version 2.3.9 or later, following vendor guidance.
- Restrict Contributor and higher content-editing access to trusted users.
- Review existing posts and pages that use this plugin's shortcodes.
- Disable the plugin if no safe update path is available.
- Monitor vendor, WordPress plugin, and WPScan advisories for updated guidance.
Validation and detection
- Inventory WordPress sites for the affected WpDevArt plugin.
- Confirm installed plugin versions are not below 2.3.9.
- Review which users hold Contributor or higher roles.
- Check posts and pages containing this plugin's shortcodes.
- Review logs or reports for suspicious content edits or browser script alerts.
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-2021-24464 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/531b3fac-48b9-4821-a3aa-4db073d43aaeCVE reference · x_refsource_MISC
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.