How severe is CVE-2026-83156?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Oracle Corporation Database Server

CVE-2026-83156

Vulnerability in the Oracle XML Developers Kit component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Difficult to exploit vulnerability allows low privileged attacker having XDKC privilege with network access via Oracle Net to compromise Oracle XML Developers Kit. Successful attacks of this vulnerability can result in takeover of Oracle XML Developers Kit. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Oracle Corporation Database Server

References

secalert_us@oracle.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-83156?: CVE-2026-83156 is a high-severity vulnerability in Oracle Corporation Database Server. CVSS score: 7.5/10. Published 2026-09-15.
How severe is CVE-2026-83156?: High severity. CVSS v3 base score is 7.5 out of 10.