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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 0 LOW 2

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 2 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 1 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 0 SQL injection 0

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Requirements No authentication 2 No user interaction 1

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Weakness (CWE) CWE-1240 Use of a Cryptographic Primitive with a Risky Implementation 1 CWE-693 Protection Mechanism Failure 1

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TI-2026-21473 CVE-2026-26994 · GHSA-pmc3-p9hx-jq96

uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries

Priority LOW 35

uTLS is a fork of crypto/tls, created to customize ClientHello for fingerprinting resistance while still using it for the handshake.

CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.00302 · Published 2026-02-20 · Fixed in 1.7.0 CWE-693

TI-2026-21491 CVE-2026-27017 · GHSA-7m29-f4hw-g2vx

uTLS has a Chrome Parrot Fingerprint Vulnerability due to GREASE ECH Cipher Suite Mismatch

Priority LOW 11

uTLS is a fork of crypto/tls, created to customize ClientHello for fingerprinting resistance while still using it for the handshake.

CVSS 4.0LOW 2.3· Network · No auth · User interaction · EPSS 0.00175 · Published 2026-02-20 · Fixed in 1.8.1 CWE-1240

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