Vulnerability in the Oracle XML Developers Kit component of Oracle Database Server. (CVE-2026-83156)
A vulnerability exists in the Oracle XML Developers Kit component of Oracle Database Server affecting versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. The flaw requires an attacker with low privileges and the XDKC privilege to exploit it via network access through Oracle Net. Successful exploitation can lead to complete takeover of the Oracle XML Developers Kit component. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity with impacts on confidentiality, integrity, and availability. Oracle has addressed this vulnerability in their September 2026 Critical Security Patch Update, which includes numerous security patches across many products. Oracle strongly recommends applying these patches promptly to mitigate the risk.
AI Analysis
Technical Summary
CVE-2026-83156 is a vulnerability in the Oracle XML Developers Kit (XDK) component of Oracle Database Server. It affects supported versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. The vulnerability allows a low privileged attacker who has the XDKC privilege and network access via Oracle Net to compromise the Oracle XML Developers Kit, potentially resulting in full takeover of this component. The CVSS 3.1 base score is 7.5 with high impact on confidentiality, integrity, and availability. Oracle has released a Critical Security Patch Update in September 2026 that includes fixes for this vulnerability among 673 security patches. Customers are urged to apply these patches without delay.
Potential Impact
The vulnerability allows an attacker with low privileges and the XDKC privilege to remotely compromise the Oracle XML Developers Kit component via network access. Successful exploitation can lead to complete takeover of the component, impacting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that addresses this vulnerability. Customers should apply the relevant patches from this update promptly to remediate the issue. Oracle strongly recommends staying on actively-supported versions and applying security patches without delay to prevent exploitation.
Vulnerability in the Oracle XML Developers Kit component of Oracle Database Server. (CVE-2026-83156)
Description
A vulnerability exists in the Oracle XML Developers Kit component of Oracle Database Server affecting versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. The flaw requires an attacker with low privileges and the XDKC privilege to exploit it via network access through Oracle Net. Successful exploitation can lead to complete takeover of the Oracle XML Developers Kit component. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity with impacts on confidentiality, integrity, and availability. Oracle has addressed this vulnerability in their September 2026 Critical Security Patch Update, which includes numerous security patches across many products. Oracle strongly recommends applying these patches promptly to mitigate the risk.
CVSS v3.1
Score 7.5high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-83156 is a vulnerability in the Oracle XML Developers Kit (XDK) component of Oracle Database Server. It affects supported versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. The vulnerability allows a low privileged attacker who has the XDKC privilege and network access via Oracle Net to compromise the Oracle XML Developers Kit, potentially resulting in full takeover of this component. The CVSS 3.1 base score is 7.5 with high impact on confidentiality, integrity, and availability. Oracle has released a Critical Security Patch Update in September 2026 that includes fixes for this vulnerability among 673 security patches. Customers are urged to apply these patches without delay.
Potential Impact
The vulnerability allows an attacker with low privileges and the XDKC privilege to remotely compromise the Oracle XML Developers Kit component via network access. Successful exploitation can lead to complete takeover of the component, impacting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that addresses this vulnerability. Customers should apply the relevant patches from this update promptly to remediate the issue. Oracle strongly recommends staying on actively-supported versions and applying security patches without delay to prevent exploitation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h33w-pj96-qw6p
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-83156"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa07e055bf5e2cf5ea334e
Added to database: 09/16/2026, 03:07:12 UTC
Last enriched: 09/16/2026, 04:21:56 UTC
Last updated: 09/16/2026, 06:01:23 UTC
Views: 1
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