wyc-bin

MEDIUM

maintainer sunflowercx 1 votes scanned 2026-11-01 00:21:48.120785

View on AUR

Why flagged

The PKGBUILD downloads a prebuilt x86_64 binary ('wyc_linux_64') directly from 'down.xiaomy.net', which is the download subdomain of the project's own domain (xiaomy.net, a Chinese intranet tunneling/NAT traversal service). While this is the vendor's own CDN/download host rather than a completely unrelated third-party host, it is still a prebuilt binary with no source code available, installed directly as an executable. The sha256sum provides integrity checking against tampering in transit, but does not protect against the vendor serving a malicious binary. This is a classic supply-chain risk: a closed-source binary from a single vendor host with no reproducibility. The risk is real but not clearly malicious — this is standard 'bin' package territory in AUR, but the binary nature and single-vendor download host warrant medium severity.

Triggered rules

Medium source=() URL on a non-standard host source_untrusted_domain

One or more source=() URLs point to a host outside the trusted allowlist (github.com, gitlab.com, codeberg.org, pypi.org, …).

PKGBUILD:10 source=("https://down.xiaomy.net/linux/wyc_linux_64")

Medium AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 85%): The PKGBUILD downloads a prebuilt x86_64 binary ('wyc_linux_64') directly from 'down.xiaomy.net', which is the download subdomain of the project's own domain (xiaomy.net, a Chinese intranet tunneling/NAT traversal service). While this is the vendor's own CDN/download host rather than a completely unrelated third-party host, it is still a prebuilt binary with no source code available, installed directly as an executable. The sha256sum provides integrity checking against tampering in transit, but does not protect against the vendor serving a malicious binary. This is a classic supply-chain risk: a closed-source binary from a single vendor host with no reproducibility. The risk is real but not clearly malicious — this is standard 'bin' package territory in AUR, but the binary nature and single-vendor download host warrant medium severity.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: sunflowercx <1527981693@qq.com>
    
      2pkgname=wyc-bin
    
      3pkgver=1.0
    
      4pkgrel=1
    
      5install=${pkgname}.install
    
      6pkgdesc="网云穿内网穿透Linux版本"
    
      7arch=("x86_64")
    
      8url="https://xiaomy.net"
    
      9license=('custom')
    
      10source=("https://down.xiaomy.net/linux/wyc_linux_64")
    
      11sha256sums=('c299049774e59ee7a12645a461f571ace0f1b09dcca1b2707a49475ef0d18694')
    
      12package() {
    
      13	install -Dm755 "${pkgname%-bin}_linux_64" -T "$pkgdir/usr/bin/wyc"
    
      14}
    
      15

Scan history

Scanned at (UTC)	Severity	Rules
2026-11-01 00:21:48	Medium	2
2026-10-31 00:07:41	Medium	2
2026-10-30 00:29:30	Medium	2
2026-10-29 00:13:55	Medium	2
2026-10-28 00:06:54	Medium	2
2026-10-27 00:23:28	Medium	2
2026-10-26 00:12:40	Medium	2
2026-10-25 00:20:48	Medium	2
2026-10-24 00:14:55	Medium	2
2026-10-23 00:02:19	Medium	2
2026-10-22 00:13:10	Medium	2
2026-10-21 00:12:50	Medium	2
2026-10-20 00:10:31	Medium	2
2026-10-19 00:03:55	Medium	2
2026-10-18 00:06:55	Medium	2
2026-10-17 00:21:55	Medium	2
2026-10-16 00:12:47	Medium	2
2026-10-15 00:28:05	Medium	2
2026-10-14 00:06:47	Medium	2
2026-10-13 00:23:45	Medium	2