CVE-2026-91744 is a race condition vulnerability in the PlatformIntegration module of Google Chrome on Mac platforms before version 153.0.8010.47. An attacker who has already compromised the renderer process can exploit this flaw by leveraging social engineering with a specially crafted HTML page to extract sensitive information. The vulnerability is classified under CWE-367 (Time-of-check Time-of-use Race Condition) and has a CVSS v3.1 base score of 5.3, indicating medium severity. No known exploits are reported in the wild, and no explicit patch or remediation details are provided in the input data.

The vulnerability allows a remote attacker with prior access to the renderer process to gain sensitive information through a race condition triggered by a crafted HTML page. This compromises confidentiality but does not impact integrity or availability. The attack requires user interaction (UI:R) and has a high attack complexity (AC:H), limiting the ease of exploitation.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor official Google Chrome security advisories for updates. Until a fix is available, exercising caution with untrusted web content and limiting renderer process compromise risk are prudent.