GO-2026-4509

vendorUSosv

Fingerprint vulnerability in uTLS from GREASE ECH mismatch for Chrome parrots in github.com/refraction-networking/utls

view advisory published 2026-02-24Licence: per source

Fingerprint vulnerability in uTLS from GREASE ECH mismatch for Chrome parrots in github.com/refraction-networking/utls

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-27017USmedium5.3—
uTLS is a fork of crypto/tls, created to customize ClientHello for fingerprinting resistance while still using it for the handshake. Versions 1.6.0 through 1.8.0 contain a fingerpr…
02

references

External citations — patches, advisories, analysis.

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