CVE Catalog

CVE-2026-21967

High
Published: Translated: NVD NIST

Summary

Vulnerability in Oracle Hospitality OPERA 5 (Opera Servlet component) allows an unauthenticated attacker with network access via HTTP to easily compromise the system. Successful attacks can result in unauthorized access to critical data or complete access to all OPERA 5 data, as well as unauthorized update, insert, or delete access to some data and partial denial of service.

Risk Assessment

The risk to the organization is high because the attack requires no authentication and can lead to breaches of confidentiality, integrity, and availability of OPERA 5 data, potentially impacting hotel operations and customer trust.

Recommendation

Apply Oracle-provided patches immediately for affected versions (5.6.19.23, 5.6.25.17, 5.6.26.10, 5.6.27.4) and restrict network access to the OPERA 5 server to trusted hosts only.

Related vulnerabilities

Original NVD description (English source)

Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are affected are 5.6.19.23, 5.6.25.17, 5.6.26.10 and 5.6.27.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hospitality OPERA 5 accessible data as well as unauthorized update, insert or delete access to some of Oracle Hospitality OPERA 5 accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hospitality OPERA 5. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS