PT-2026-3713 · Oracle · Opera 5 Property Services

Johnathan Law · Published 2026-01-20 · Updated 2026-01-21 · CVE-2026-21966

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Oracle Hospitality OPERA 5 Property Services versions 5.6.19.23 through 5.6.27.4

Description An easily exploitable issue exists in the Oracle Hospitality OPERA 5 Property Services component, allowing an unauthenticated attacker with network access via HTTP to compromise the system. Successful attacks require interaction from a user other than the attacker and may impact additional products. Successful exploitation can lead to unauthorized data modification, insertion, deletion, and read access to Oracle Hospitality OPERA 5 Property Services data.

Recommendations Update Oracle Hospitality OPERA 5 Property Services to a version later than 5.6.27.4. Update Oracle Hospitality OPERA 5 Property Services to a version later than 5.6.26.10. Update Oracle Hospitality OPERA 5 Property Services to a version later than 5.6.25.17. Update Oracle Hospitality OPERA 5 Property Services to a version later than 5.6.19.23.

Fix

Related Identifiers

CVE-2026-21966

Affected Products

Opera 5 Property Services

References · 4

• https://osv.dev/vulnerability/CVE-2026-21966 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21966 · Security Note
• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://twitter.com/CVEnew/status/2013782993979240698 · Twitter Post