lynx-devtool

maintainer zaeyee · 0 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads and installs a prebuilt AppImage binary from cnb.cool, which is a Chinese cloud/DevOps platform (similar to GitLab SaaS). The host is not an official upstream release mirror but rather a personal/organizational repository hosted by the maintainer themselves (zaeyee/open-source/lynx-devtool). The AppImage is installed as an executable at /opt/lynx-devtool/ and run directly by users. Key concerns: (1) cnb.cool is not a well-known, audited release host — it's essentially a personal artifact store, meaning the binary could be replaced without any upstream verification mechanism beyond the sha256sum; (2) AppImages bundle their own runtime and libraries, so the entire execution environment is opaque; (3) the sha256sums are present and pinned, which mitigates silent substitution at build time, but does not verify the binary's provenance or contents. The upstream GitHub project (lynx-family/lynx-devtool) exists and is legitimate (Lynx is ByteDance's cross-platform framework), but the releases are being served from a third-party host rather than GitHub Releases, which is the standard pattern. This is a genuine medium-risk supply-chain concern: an executed binary from an unofficial/personal host with no reproducibility guarantee, even though sha256sums are present.

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:12 "https://cnb.cool/zaeyee/open-source/lynx-devtool/-/releases/download/v${pkgver}/LynxDevTool-${pkgver}.AppImage"

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): The PKGBUILD downloads and installs a prebuilt AppImage binary from cnb.cool, which is a Chinese cloud/DevOps platform (similar to GitLab SaaS). The host is not an official upstream release mirror but rather a personal/organizational repository hosted by the maintainer themselves (zaeyee/open-source/lynx-devtool). The AppImage is installed as an executable at /opt/lynx-devtool/ and run directly by users. Key concerns: (1) cnb.cool is not a well-known, audited release host — it's essentially a personal artifact store, meaning the binary could be replaced without any upstream verification mechanism beyond the sha256sum; (2) AppImages bundle their own runtime and libraries, so the entire execution environment is opaque; (3) the sha256sums are present and pinned, which mitigates silent substitution at build time, but does not verify the binary's provenance or contents. The upstream GitHub project (lynx-family/lynx-devtool) exists and is legitimate (Lynx is ByteDance's cross-platform framework), but the releases are being served from a third-party host rather than GitHub Releases, which is the standard pattern. This is a genuine medium-risk supply-chain concern: an executed binary from an unofficial/personal host with no reproducibility guarantee, even though sha256sums are present.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: zaeyee <zaeyee@163.com>
    
      2pkgname=lynx-devtool
    
      3pkgver=0.1.1
    
      4pkgrel=1
    
      5pkgdesc="Debug Lynx On-the-Fly"
    
      6arch=("x86_64")
    
      7url="https://github.com/lynx-family/lynx-devtool"
    
      8license=("Apache-2.0")
    
      9depends=("fuse2" "gtk3" "nss" "libxss" "libxtst" "xdg-utils")
    
      10options=("!strip")
    
      11source=(
    
      12  "https://cnb.cool/zaeyee/open-source/lynx-devtool/-/releases/download/v${pkgver}/LynxDevTool-${pkgver}.AppImage"
    
      13  "${pkgname}.desktop"
    
      14  "${pkgname}.png::https://cnb.cool/zaeyee/open-source/lynx-devtool/-/git/raw/v${pkgver}/res/icons/lynx-devtool_256x256.png"
    
      15)
    
      16sha256sums=('e90fdd19524c554f458cade3bab2a8c5b6f5c68ec536b921eaea92d518eda26c'
    
      17            '91765fa4430c48ed574f732d28d3fb21c16bde66a621b6bd5c7901c33f3da1bf'
    
      18            'd093412e18403e54af0ffcb5d325d50f5c05b6f398277f787bc18ec4a0b529ca')
    
      19
    
      20package() {
    
      21  install -Dm755 "${srcdir}/LynxDevTool-${pkgver}.AppImage" "${pkgdir}/opt/${pkgname}/LynxDevTool.AppImage"
    
      22  install -Dm644 "${srcdir}/${pkgname}.desktop" "${pkgdir}/usr/share/applications/${pkgname}.desktop"
    
      23  install -Dm644 "${srcdir}/${pkgname}.png" "${pkgdir}/usr/share/icons/${pkgname}.png"
    
      24}
    
      25

Scan history

Scanned at (UTC)	Severity	Rules
2026-08-03 00:08:14	MEDIUM	2
2026-08-02 00:16:08	MEDIUM	2
2026-08-01 00:11:18	MEDIUM	2
2026-07-31 00:14:10	MEDIUM	2
2026-07-30 00:17:23	MEDIUM	2
2026-07-29 00:25:53	MEDIUM	2
2026-07-28 00:07:28	MEDIUM	2
2026-07-27 00:24:32	MEDIUM	2
2026-07-26 00:07:32	MEDIUM	2
2026-07-25 00:13:44	MEDIUM	2
2026-07-24 00:02:28	MEDIUM	2
2026-07-23 00:14:47	MEDIUM	2
2026-07-22 00:29:32	MEDIUM	2
2026-07-21 00:24:15	MEDIUM	2
2026-07-20 00:19:49	MEDIUM	2
2026-07-19 00:17:08	MEDIUM	2
2026-07-18 00:14:48	MEDIUM	2
2026-07-17 00:06:16	MEDIUM	2
2026-07-16 00:05:41	MEDIUM	2
2026-07-15 00:09:25	MEDIUM	2