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CVE-2026-92966 – Unauthenticated Arbitrary Shortcode Execution (Code Injection) – LatePoint WordPres

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Summary

CVE-2026-92966 is a critical code injection vulnerability (CWE-94, Improper Control of Generation of Code) affecting the LatePoint – Calendar & Scheduling Appointment Booking plugin for WordPress. The plugin fails to validate input submitted through its unauthenticated booking form, allowing an attacker to plant malicious shortcode payloads that are later executed on the site. The flaw carries a CVSS v3.1 base score of 9.1 (Critical) and requires no authentication or user interaction to exploit.

Technical details

  • Root cause: LatePoint does not sanitize or validate the first/last name fields submitted through its public booking form before storing and later re-rendering them.
  • Trigger conditions: An attacker submits a booking request containing a shortcode payload in the name fields. The payload is persisted and later rendered by the Customer Cabinet block via render_customer_dashboard(), which outputs the stored name into the content stream where WordPress core’s do_shortcode filter (running at priority 11) re-parses and executes it.
  • Attack vector: Network-based, unauthenticated — the booking form is publicly accessible on any site running the plugin.
  • Impact: Successful exploitation allows execution of arbitrary registered shortcodes in the WordPress context, leading to full compromise of confidentiality and integrity of site data (e.g., information disclosure, and depending on installed shortcodes/plugins, potential escalation to further compromise). Availability is not impacted.

Affected software

  • Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress: versions 0 through 5.7.0 (inclusive)

Severity

  • CVSS v3.1 Base Score: 9.1 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Upgrade the LatePoint plugin to version 5.7.1 or later, where the input used in the Customer Cabinet rendering flow is no longer passed through do_shortcode unsanitized.
  • If immediate patching is not possible:
    • Restrict or temporarily disable the public booking form until the plugin can be updated.
    • Monitor booking submissions for unusual content in name fields (e.g., bracketed shortcode syntax such as [...]).
    • Review Customer Cabinet / dashboard output for unexpected rendered content that may indicate a planted payload.
    • Enable a web application firewall rule to block shortcode-like patterns in booking form submissions as a stopgap measure.

References

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