CVE-2026-27017
Description
A flaw was found in uTLS. When using GREASE Encrypted ClientHello (ECH), uTLS versions 1.6.0 through 1.8.0 may exhibit a fingerprint mismatch with Chrome. This occurs due to an inconsistent selection of cipher suites between the outer ClientHello and the ECH, potentially allowing a remote observer to distinguish the uTLS client from a standard Chrome browser. This could lead to a low impact information disclosure regarding the client's identity.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Frequently Asked Questions
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