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TI-2026-17665 Aliases CVE-2026-21966GHSA-m2r3-gq7c-7p58

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle…

Priority LOW 27Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions that are affected are 5.6.19.23, 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 Property Services. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Hospitality OPERA 5 Property Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Hospitality OPERA 5 Property Services accessible data as well as unauthorized read access to a subset of Oracle Hospitality OPERA 5 Property Services accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleOracle Hospitality OPERA 5 Property Services5.6.19.23; 5.6.25.17; 5.6.26.10; 5.6.27.4—No fix listedCNA
  • Oracle Hospitality OPERA 5 Property Services VendorOracle Affected 5.6.19.23; 5.6.25.17; 5.6.26.10; 5.6.27.4 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:oracle:hospitality_opera_5:5.6.19.23:*:*:*:*:*:*:*5.6.19.23VulnerableOracle
cpe:2.3:a:oracle:hospitality_opera_5:5.6.25.17:*:*:*:*:*:*:*5.6.25.17VulnerableOracle
cpe:2.3:a:oracle:hospitality_opera_5:5.6.26.10:*:*:*:*:*:*:*5.6.26.10VulnerableOracle
cpe:2.3:a:oracle:hospitality_opera_5:5.6.27.4:*:*:*:*:*:*:*5.6.27.4VulnerableOracle
  • cpe:2.3:a:oracle:hospitality_opera_5:5.6.19.23:*:*:*:*:*:*:* Versions 5.6.19.23 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:hospitality_opera_5:5.6.25.17:*:*:*:*:*:*:* Versions 5.6.25.17 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:hospitality_opera_5:5.6.26.10:*:*:*:*:*:*:* Versions 5.6.26.10 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:hospitality_opera_5:5.6.27.4:*:*:*:*:*:*:* Versions 5.6.27.4 Vulnerable ·Oracle

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21966
  2. 2026-10-03 Alias added: GHSA-m2r3-gq7c-7p58

References

Advisory 1

  • TI-2020-13278 Expression language injection in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-07411 Deserialization of untrusted data in Apache Commons Beanutils CVSS 3.1HIGH 7.3
  • TI-2018-01190 XML external entity injection in Apache log4net CVSS 3.1CRITICAL 9.8
  • TI-2025-15507 Uncontrolled resource consumption in Oracle Hospitality OPERA 5 CVSS 3.1CRITICAL 9.1
  • TI-2019-13109 Server-side request forgery in Apache Batik CVSS 3.1HIGH 7.5
  • TI-2026-17666 Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality… CVSS 3.1HIGH 8.6
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences