CVE-2026-83187 Missing authorization in Oracle Common Applications Calendar
Low-privileged attackers can modify or read critical data in Oracle Common Applications Calendar via HTTP without proper authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83187?
CVE-2026-83187 is a high-severity missing authorization vulnerability in Oracle Common Applications Calendar, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Applications Calendar). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Common Applications Calendar. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Common Applications Calendar accessible data as well as unauthorized read access to a subset of Oracle Common Applications Calendar accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-83187?
How do I fix CVE-2026-83187?
No fix has been published for CVE-2026-83187 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-83187 being exploited?
There is no known exploitation of CVE-2026-83187 in the wild and no public exploit code.
Sources
Also known as GHSA-f33r-mxcm-7f8j.