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Description

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).

PUBLISHED Reserved 2026-01-05 | Published 2026-01-20 | Updated 2026-01-21 | Assigner oracle




HIGH: 8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Problem types

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.

Product status

5.6.19.23 (semver)
affected

5.6.25.17 (semver)
affected

5.6.26.10 (semver)
affected

5.6.27.4 (semver)
affected

References

www.oracle.com/security-alerts/cpujan2026.html (Oracle Advisory) vendor-advisory

cve.org (CVE-2026-21967)

nvd.nist.gov (CVE-2026-21967)

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