by Kastro
Paper/Archive/CVE-2026-34311

CVE-2026-34311

Oracle Corporation Oracle Hospitality OPERA 5 Property Services — Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera).

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.0.400 × 208.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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).

Affected

ProductAffectedFixed inSource
Oracle Hospitality OPERA 5 Property Services5.6.19.24–CNA
Oracle Hospitality OPERA 5 Property Services5.6.22–CNA
Oracle Hospitality OPERA 5 Property Services5.6.25.19–CNA
Oracle Hospitality OPERA 5 Property Services5.6.27.6–CNA
Oracle Hospitality OPERA 5 Property Services5.6.28–CNA

Scores by source

oracle (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisoryoracle.com/security-alerts/cspumay2026.html