Is CVE-2026-91511 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-91511 being exploited in the wild.

How severe is CVE-2026-91511?

High severity, with a CVSS score of 7.1, published 20 October 2026.

Which products and versions are affected?

Oracle E-Business Suite Purchasing 12.2.3 to 12.2.15.

Is there a fix for CVE-2026-91511?

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-2026-91511 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-91511?

Check whether you run Oracle E-Business Suite Purchasing 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.

CVE-2026-91511: Oracle E-Business Suite Purchasing authentication bypass via HTTP

CVE-2026-91511 · Severity: high · CVSS 7.1 · Published 2026-10-20

Oracle E-Business Suite is a suite of enterprise applications that manage business operations and customer relations. The Purchasing component, which handles procurement workflows, contains a difficult-to-exploit vulnerability that allows an attacker with limited network access to gain unauthorized access to sensitive procurement data and modify records. This could expose confidential supplier information, purchase orders, and financial data across the organization.

Technologies: Oracle E-Business Suite Purchasing. Vendors: Oracle.

Quick answers

Is CVE-2026-91511 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-91511 being exploited in the wild.
How severe is CVE-2026-91511?: High severity, with a CVSS score of 7.1, published 20 October 2026.
Which products and versions are affected?: Oracle E-Business Suite Purchasing 12.2.3 to 12.2.15.
Is there a fix for CVE-2026-91511?: 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-2026-91511 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-91511?: Check whether you run Oracle E-Business Suite Purchasing 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

A difficult-to-exploit vulnerability in the Purchasing component of Oracle E-Business Suite allows a low-privileged attacker with network access via HTTP to compromise the system despite high complexity requirements. The vulnerability has scope change, meaning successful exploitation can impact additional Oracle products beyond Purchasing. The attack results in high confidentiality impact (unauthorized access to critical procurement data) and low integrity impact (unauthorized modifications to some data).

Affected products

Oracle E-Business Suite Purchasing 12.2.3 to 12.2.15

Timeline

2026-10-20: disclosed

References

https://www.oracle.com/security-alerts/cpuoct2026.html

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