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Vulnerability record · CVE-2026-34311 · published 28 May 2026

CVE-2026-34311: Oracle hospitality opera 5 property services vulnerability

Oracle · Hospitality Opera 5 Property Services

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions that are affected are 5.6.19.24, 5.6.22, 5.6.25.19, 5.6.27.6 and 5.6.28. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5 Property Services. Successful attacks of this vulnerability can result in takeover of Oracle Hospitality OPERA 5 Property Services. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

9.8 CVSS 3.1 Critical EPSS 0.55% · top 56.3%
9.8CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions that are affected are 5.6.19.24, 5.6.22, 5.6.25.19, 5.6.27.6 and 5.6.28. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5 Property Services. Successful attacks of this vulnerability can result in takeover of Oracle Hospitality OPERA 5 Property Services. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.oracle.com/security-alerts/cspumay2026.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-71106Oracle hospitality opera 5 property services improper access control vulnerabilityVulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera Servlet). Supported ve…EPSS 0.42%8.8CVE-2023-22087Oracle hospitality opera 5 property services missing authentication for critical function vulnerabilityVulnerability in the Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). The supported version that …EPSS 0.56%8.8CVE-2023-22085Oracle hospitality opera 5 property services vulnerabilityVulnerability in the Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). The supported version that …EPSS 0.67%7.9CVE-2016-5563Oracle hospitality opera 5 property services vulnerabilityUnspecified vulnerability in the Oracle Hospitality OPERA 5 Property Services component in Oracle Hospitality Applications 5.4.0.0 through 5.4.3.0, 5…EPSS 1.1%7.7CVE-2016-5565Oracle hospitality opera 5 property services information exposure vulnerabilityUnspecified vulnerability in the Oracle Hospitality OPERA 5 Property Services component in Oracle Hospitality Applications 5.4.0.0 through 5.4.3.0, 5…EPSS 1.4%7.4CVE-2016-5564Oracle hospitality opera 5 property services vulnerabilityUnspecified vulnerability in the Oracle Hospitality OPERA 5 Property Services component in Oracle Hospitality Applications 5.4.0.0 through 5.4.3.0, 5…EPSS 1.2%7.2CVE-2023-21932Oracle Hospitality OPERA 5 OXI component flaw allows high-privileged data accessCVE-2023-21932 is a vulnerability in the OXI component of Oracle Hospitality OPERA 5 Property Services, affecting version 5.6. It is described as dif…EPSS 45%analysed7.1CVE-2017-3574Oracle hospitality opera 5 property services vulnerabilityVulnerability in the Oracle Hospitality OPERA 5 Property Services component of Oracle Hospitality Applications (subcomponent: OPERA License code conf…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2026-34311), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.