← Vulnerability feed

Vulnerability record · CVE-2026-21967 · published 20 January 2026

CVE-2026-21967: Oracle hospitality opera 5 vulnerability

Oracle · Hospitality Opera 5

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).

8.6 CVSS 3.1 High EPSS 0.31% · top 78.9%
8.6CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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).

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.oracle.com/security-alerts/cpujan2026.html Vendor Advisory

Track CVE-2026-21967 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-17530Apache Struts forced OGNL evaluation enables remote code executionApache Struts 2.0.0 through 2.5.25 performs forced OGNL evaluation on raw user input placed in tag attributes, allowing expression language injection…KEVEPSS 96%analysed9.8CVE-2018-1285Apache log4net xml external entity (xxe) vulnerabilityApache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attack…EPSS 17%9.1CVE-2025-21547Oracle hospitality opera 5 uncontrolled resource consumption vulnerabilityVulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are af…EPSS 0.59%9.0CVE-2024-21172Oracle hospitality opera 5 vulnerabilityVulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are af…EPSS 0.50%8.3CVE-2021-2351Oracle advanced networking option broken cryptographic algorithm vulnerabilityVulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and …EPSS 2.4%7.5CVE-2019-17566Apache batik server-side request forgery (ssrf) vulnerabilityApache Batik is vulnerable to server-side request forgery, caused by improper input validation by the "xlink:href" attributes. By using a specially-c…EPSS 11%7.3CVE-2019-10086Apache commons beanutils deserialization of untrusted data vulnerabilityIn Apache Commons Beanutils 1.9.2, a special BeanIntrospector class was added which allows suppressing the ability for an attacker to access the clas…EPSS 28%6.1CVE-2026-21966Oracle hospitality opera 5 vulnerabilityVulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions t…EPSS 0.21%

Source: NIST National Vulnerability Database (record CVE-2026-21967), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.