Vulnerability in Oracle Hospitality Opera 5 Property Services
CVE-2026-34311
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).
EPSS: 0.005 (39.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Oracle Hospitality_opera_5_property_services — versions 5.6.19.24, 5.6.22, 5.6.25.19
- Oracle Corporation Hospitality Opera 5 Property Services — versions 5.6.19.24, 5.6.22, 5.6.25.19
References
- secalert_us@oracle.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-34311?
- CVE-2026-34311 is a critical-severity vulnerability in Oracle Hospitality Opera 5 Property Services. CVSS score: 9.8/10. Published 2026-05-28.
- How severe is CVE-2026-34311?
- Critical severity. CVSS v3 base score is 9.8 out of 10.