CVE-2026-92421

Hydra Booking <= 1.2.2 - Authenticated (Hydra Host+) Insecure Direct Object Reference

2026-09-17 00:00
Ossacip Thanh

Strategic Overview

Status
Patched in 1.2.3
Affected Plugin
Hydra Booking — Appointment Scheduling & Booking Calendar
Affected Version
<= 1.2.2
CVSS
4.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2026-92421
View all Hydra Booking — Appointment Scheduling & Booking Calendar vulnerabilities

At a glance

CVE-2026-92421 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Hydra Booking WordPress plugin, affecting versions <= 1.2.2. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Hydra Host level or above. The issue is fixed in version 1.2.3; sites on affected versions should update now. Disclosed September 2026, reported by Ossacip Thanh.

Vulnerability Overview

The Hydra Booking plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.2. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with hydra host-level access and above, to perform an unauthorized action.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in Hydra Booking <= 1.2.2 takes an account at Hydra Host level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Hydra Booking the fix is 1.2.3: builds <= 1.2.2 are affected, anything from 1.2.3 onward is not.

Remediation

Update to version 1.2.3, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Hydra Booking 1.2.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-92421https://www.wordfence.com/threat-intel/vulnerabilities/id/e285eb46-031a-4be9-85c8-a904e076d46ehttps://nvd.nist.gov/vuln/detail/CVE-2026-92421

Related records

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