Oracle Hospitality OPERA Property Services up to 5.6.28.1 Opera Servlet input validation

Summaryinfo

A vulnerability identified as critical has been detected in Oracle Hospitality OPERA Property Services up to 5.6.28.1. Affected by this issue is some unknown functionality of the component Opera Servlet. The manipulation leads to input validation. This vulnerability is documented as CVE-2026-71106. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Oracle Hospitality OPERA Property Services up to 5.6.28.1 and classified as critical. This issue affects some unknown functionality of the component Opera Servlet. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are affected are 5.6.28.0-5.6.28.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5 Property Services. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Hospitality OPERA 5 Property Services. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

The advisory is shared at oracle.com. The identification of this vulnerability is CVE-2026-71106 since 08/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/19/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Hospitality Software

Vendor

• Oracle

Name

• Hospitality OPERA Property Services

Version

• 5.6.28.0
• 5.6.28.1

License

• commercial

Website

• Vendor: https://www.oracle.com

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