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CVE-2026-26994

🗓️ 20 Feb 2026 03:16:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 3 Views

uTLS earlier than 1.7.0 lacks downgrade protection, enabling TLS 1.2 downgrade and fingerprinting.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-26994
20 Feb 202602:50
attackerkb
Chainguard
CVE-2026-26994 vulnerabilities
20 Feb 202601:17
cgr
CNNVD
uTLS 安全漏洞
20 Feb 202600:00
cnnvd
CVE
CVE-2026-26994
20 Feb 202602:50
cve
Cvelist
CVE-2026-26994 uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries
20 Feb 202602:50
cvelist
Debian CVE
CVE-2026-26994
20 Feb 202602:50
debiancve
EUVD
EUVD-2026-18218
2 Apr 202615:31
euvd
Github Security Blog
uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries
23 Apr 202514:43
github
NVD
CVE-2026-26994
20 Feb 202603:16
nvd
OSV
CVE-2026-26994 uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries
20 Feb 202602:50
osv
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu26.04anygolang-refraction-networking-utls0golang-refraction-networking-utls_0_any.deb
Ubuntu22.04anygolang-refraction-networking-utls0golang-refraction-networking-utls_0_any.deb
Ubuntu24.04anygolang-refraction-networking-utls0golang-refraction-networking-utls_0_any.deb
Ubuntu25.10anygolang-refraction-networking-utls0golang-refraction-networking-utls_0_any.deb

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27 Feb 2026 14:37Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.16.5
EPSS0.00268
SSVC
3