github.com/refraction-networking/utls (go) has 3 known vulnerabilities, the worst rated MODERATE. Upgrade to 1.8.2 or later to clear all of them. No malicious-package signal is recorded.
0 direct dependencies
none carry a known advisory
31 packages depend on it
an advisory here reaches each of them
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so go packages are not covered.
CVSS v3.1 base score out of 10
chance of exploitation in 30 days, 23rd percentile of all CVEs
CyberXYZ composite out of 10
fig. 01 — GHSA-pmc3-p9hx-jq96, the advisory selected below
Before version 1.7.0, utls did not implement the TLS 1.3 downgrade protection mechanism specified in RFC 8446 Section 4.1.3 when using a utls ClientHello spec.
Full advisory text at GitHub advisory, NVD or OSV.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CyberXYZ does not call a package safe in absolute terms. It records 3 known vulnerabilities for github.com/refraction-networking/utls (go), the worst rated MODERATE, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Yes. CyberXYZ records 3 known vulnerabilities for github.com/refraction-networking/utls (go), the worst rated MODERATE. They are GHSA-pmc3-p9hx-jq96, GHSA-rrxv-pmq9-x67r, GHSA-7m29-f4hw-g2vx.
1.8.2 or later clears every advisory recorded for github.com/refraction-networking/utls (go). Check the release you pick before installing it.
Search github.com/refraction-networking/utls in CyberXYZ Check at https://cyberxyz.io/check?q=github.com%2Frefraction-networking%2Futls. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 07:01 UTC. The most recent advisory here was published 2026-02-18. Updated continuously from NVD, GHSA, OSV and CNA feeds.