Security readout for executives and security teams
Plain-English summary
WordPress sites using WP Booking System – Booking Calendar version 2.0.18 or earlier may allow a privileged admin user to place script content that affects another user. The issue needs high privileges and user interaction, so urgency is moderate, especially for sites with multiple admins or possible compromised admin accounts.
Executive priority
Treat as a moderate priority maintenance and access-control issue. It is not reported as actively exploited in the provided sources, but affected sites should be identified and updated or controlled because admin-level XSS can amplify account compromise.
Technical view
CVE-2023-24402 is an authenticated admin+ cross-site scripting issue in WP Booking System – Booking Calendar <=2.0.18, classified as CWE-79. CVSS 3.1 is 5.9 with network access, low complexity, high privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress deployments with Veribo/Roland Murg WP Booking System – Booking Calendar installed at version 2.0.18 or earlier. Risk is higher where several administrators manage booking content or where admin account compromise is plausible.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability requires an authenticated admin-level actor and a user interaction condition, which reduces broad internet-scale exploitability but still matters after admin compromise or insider misuse.
Researcher notes
Evidence is limited to the CVE metadata and Patchstack entry. No affected CPEs, exact vulnerable parameter, exploit details, or fixed version are included in the provided bundle, so validation should focus on version exposure and vendor-confirmed remediation.
Mitigation direction
- Check vendor or Patchstack guidance for the fixed or recommended plugin version.
- Update WP Booking System if an official fixed release is available.
- Disable or remove the plugin if it is unnecessary or cannot be safely updated.
- Restrict WordPress administrator access to trusted, MFA-protected accounts.
- Review booking plugin content and settings for unexpected script-like entries.
Validation and detection
- Inventory WordPress sites for the wp-booking-system plugin.
- Confirm whether installed versions are 2.0.18 or earlier.
- Check whether admin access is limited to approved users only.
- Review CVE and Patchstack records for current remediation guidance.
- Inspect relevant booking content/settings for unauthorized changes.
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-2023-24402 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/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.