wyc-bin

MEDIUM

maintainer sunflowercx 1 votes scanned 2026-09-17 00:27:14.276658

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
2026-09-17 00:27:14	Medium	2
2026-09-16 00:03:17	Medium	2
2026-09-15 00:25:31	Medium	2
2026-09-14 00:27:57	Medium	2
2026-09-13 00:19:54	Medium	2
2026-09-12 00:25:17	Medium	2
2026-09-11 00:19:22	Medium	2
2026-09-10 00:22:44	Medium	2
2026-09-09 00:04:09	Medium	2
2026-09-08 00:18:08	Medium	2
2026-09-07 00:30:15	Medium	2
2026-09-06 00:17:06	Medium	2
2026-09-05 00:16:27	Medium	2
2026-09-04 00:03:13	Medium	2
2026-09-03 00:15:47	Medium	2
2026-09-02 00:02:31	Medium	2
2026-09-01 00:11:19	Medium	2
2026-08-31 00:19:57	Medium	2
2026-08-30 00:04:14	Medium	2
2026-08-29 00:29:17	Medium	2