Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in a WordPress Vimeo shortcode plugin. A contributor-level user or higher could place harmful script content that affects someone who later views it. The business risk is mainly compromised sessions, content tampering, or user redirection on affected WordPress sites.
Executive priority
Prioritize affected public WordPress sites with many content contributors or privileged logged-in users. This is not a critical emergency based on the supplied evidence, but it should be handled in the normal vulnerability remediation cycle because stored XSS can support account compromise and site trust damage.
Technical view
CVE-2023-27443 affects Grant Kimball Simple Vimeo Shortcode, package slug the-very-simple-vimeo-shortcode, reported for versions up to 2.9.1. It is CWE-79 stored XSS with CVSS 3.1 score 6.5. The vector shows network access, low complexity, low privileges, required user interaction, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress installations using the Simple Vimeo Shortcode plugin at version 2.9.1 or earlier, especially sites with contributor or author accounts. Sites not using this plugin are not indicated as affected by the supplied sources.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an authenticated contributor-level or higher account and a victim interaction, such as viewing affected stored content. Treat this as a credible web application risk, not confirmed mass exploitation.
Researcher notes
The evidence identifies authenticated contributor-plus stored XSS, but the supplied bundle does not include exploit details, vulnerable parameter specifics, or an official fixed version. Avoid assuming patch availability beyond the affected-version statement. Validate exposure through installed plugin version, role model, and stored-content review.
Mitigation direction
- Inventory WordPress sites for the the-very-simple-vimeo-shortcode plugin.
- Check vendor or Patchstack guidance for a fixed version or official mitigation.
- Update above 2.9.1 only if a trusted source confirms the release fixes this CVE.
- Disable or remove the plugin where it is not business-critical.
- Restrict contributor-level access on affected sites until remediation is confirmed.
- Review author accounts for unnecessary privileges.
Validation and detection
- Confirm plugin slug and installed version on each WordPress site.
- Identify sites where contributor, author, or editor access is broadly assigned.
- Review pages or posts using the Vimeo shortcode for suspicious stored content.
- Check web security monitoring for unusual script execution or redirects.
- Verify remediation status against vendor or Patchstack records.
- Document sites where no fixed version is confirmed.
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-2023-27443 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.