Security readout for executives and security teams
Plain-English summary
This is a stored XSS flaw in Start Booking's WordPress scheduling plugin up to 3.5.10. A lower-privileged user could store unsafe content that later runs in another user's browser after interaction. Business impact includes site trust, admin/session exposure, and content integrity. Sources do not show confirmed exploitation.
Executive priority
Treat as a near-term WordPress hygiene issue, especially on externally managed or multi-user sites. Prioritize inventory, vendor guidance, and access restriction, but do not escalate as emergency exploitation without new evidence.
Technical view
CVE-2024-23517 is CWE-79 stored XSS from improper input neutralization during page generation. CVSS 3.1 is 6.5: AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. It affects calendar-booking through 3.5.10. The source bundle does not identify a patched version, sink, parameter, or exact privilege role.
Likely exposure
WordPress sites using Start Booking Scheduling Plugin – Online Booking for WordPress, package calendar-booking, at version 3.5.10 or earlier. Exposure depends on whether untrusted or lower-privileged users can submit content rendered to other users.
Exploitation context
The CVE record lists network access, low complexity, low privileges, and required user interaction. It is not marked as CISA KEV in the provided data, and no cited source confirms active exploitation or public weaponization.
Researcher notes
Evidence confirms affected product range and CVSS characteristics, but not the vulnerable field, required role, patched version, exploit availability, or real-world abuse. Avoid publishing reproduction details unless sourced from vendor-approved guidance.
Mitigation direction
- Inventory WordPress sites for the calendar-booking plugin and version.
- Check Start Booking or Patchstack guidance for a fixed release or vendor mitigation.
- Restrict plugin access to trusted users until guidance is applied.
- Review administrative sessions after suspected malicious content exposure.
Validation and detection
- Confirm whether calendar-booking is installed and at version 3.5.10 or earlier.
- Review plugin-managed booking content for suspicious scripts or unexpected markup.
- Check WordPress roles that can create or modify plugin-rendered content.
- Verify remediation against vendor or Patchstack guidance, not assumptions.
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-2024-23517 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.