This vulnerability affects Oracle Knowledge Management, a component of Oracle E-Business Suite User Interface, specifically version 12.2.3. It permits a low privileged attacker with network access via HTTP to gain unauthorized update, insert, or delete access to some accessible data, as well as unauthorized read access to a subset of data. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, and impacts on confidentiality and integrity but not availability. The vendor advisory references the July 2026 Critical Patch Update but does not explicitly confirm a patch for this vulnerability. Oracle strongly recommends applying patches from their Critical Patch Updates to mitigate such vulnerabilities.

Successful exploitation can lead to unauthorized modification (update, insert, delete) and unauthorized reading of some data accessible through Oracle Knowledge Management. This compromises data confidentiality and integrity but does not impact system availability. The attack requires network access and low privileges, making it relatively easy to exploit.

Oracle's July 2026 Critical Patch Update advisory recommends applying security patches without delay to address vulnerabilities including this one. Although no specific patch version is explicitly stated for CVE-2026-61261, customers should apply the latest Critical Patch Update from Oracle to mitigate this vulnerability. Until patched, restrict network access to Oracle Knowledge Management interfaces where possible to limit exposure.