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CVE-2026-39821

🗓️ 22 May 2026 16:16:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 16 Views

ToUnicode and ToASCII accept punycode labels decoding to ASCII, enabling privilege escalation with spoofed hosts.

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Refs
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OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu18.04allgolang-golang-x-net-dev1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3golang-golang-x-net-dev_1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3_all.deb
Ubuntu20.04allgolang-golang-x-net-dev1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3golang-golang-x-net-dev_1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3_all.deb

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09 Jun 2026 19:58Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.19.6
EPSS0.00655
SSVC
16