# CVE-2026-83300: Oracle XML Gateway Install component unauthorized access and DoS in E-Business Suite

Source: https://junglewise.ai/threats/cve-2026-83300-oracle-xml-gateway-install-component-unauthorized-access-and-dos  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83300 · Severity: high · CVSS 7.1 · Published 2026-09-15

Oracle XML Gateway is a critical middleware component within Oracle E-Business Suite used for enterprise data integration and messaging. A low-privileged attacker with network access can exploit this vulnerability to read sensitive business data and disrupt service availability, potentially affecting order processing, supply chain operations, and financial integrations.

Technologies: [Oracle Xml Gateway](https://junglewise.ai/threats/technologies/xml-gateway). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-83300 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83300 being exploited in the wild.

**How severe is CVE-2026-83300?** High severity, with a CVSS score of 7.1, published 15 September 2026.

**Which products and versions are affected?** Oracle Xml Gateway 12.2.3–12.2.15.

**Is there a fix for CVE-2026-83300?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-83300 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-83300?** Check whether you run Oracle Xml Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is an easily exploitable vulnerability in the Oracle XML Gateway Install component affecting versions 12.2.3–12.2.15. The vulnerability allows a low-privileged, network-accessible attacker (via HTTP) to bypass authorization controls and access restricted data or cause partial denial of service. The attack requires valid authentication (PR:L) but no user interaction. Successful exploitation results in high confidentiality impact (unauthorized access to critical and all accessible data) and low availability impact (partial DoS). A patch is available via Oracle's September 2026 Critical Patch Update.

## Affected products

- Oracle XML Gateway 12.2.3–12.2.15

## Timeline

- 2026-09-15: disclosed

## References

- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.html)

## Related threats

- [Oracle XML Gateway HTTP authentication bypass in E-Business Suite](https://junglewise.ai/threats/cve-2026-83345-oracle-xml-gateway-http-authentication-bypass-in-e-business-suite)
- [Oracle XML Gateway unauthorized access and denial of service](https://junglewise.ai/threats/cve-2026-83044-oracle-xml-gateway-unauthorized-access-and-denial-of-service)
- [Oracle E-Business Suite XML Gateway data compromise in Oracle Transport Agent](https://junglewise.ai/threats/cve-2017-3303-oracle-e-business-suite-xml-gateway-data-compromise-in-oracle)