hyperbeam

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

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt AppImage binary from cdn.hyperbeam.com, which is the official CDN for the Hyperbeam project. The binary is executed during prepare() to extract its contents (--appimage-extract), and the extracted native application is then installed to /opt. A sha256sum is provided, which pins the specific binary. The concern is that this is a closed-source, prebuilt executable from a vendor CDN rather than built from source — standard for proprietary AppImage packaging in the AUR. The risk is real but typical for this class of package: if the CDN were compromised or the vendor pushed a malicious update, users would execute arbitrary code. This is a genuine medium-severity supply-chain concern (prebuilt binary from a non-reproducible source), not a false positive, but also not evidence of active malice.

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:14 source=("https://cdn.hyperbeam.com/${_file}")

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 a prebuilt AppImage binary from cdn.hyperbeam.com, which is the official CDN for the Hyperbeam project. The binary is executed during prepare() to extract its contents (--appimage-extract), and the extracted native application is then installed to /opt. A sha256sum is provided, which pins the specific binary. The concern is that this is a closed-source, prebuilt executable from a vendor CDN rather than built from source — standard for proprietary AppImage packaging in the AUR. The risk is real but typical for this class of package: if the CDN were compromised or the vendor pushed a malicious update, users would execute arbitrary code. This is a genuine medium-severity supply-chain concern (prebuilt binary from a non-reproducible source), not a false positive, but also not evidence of active malice.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Cebtenzzre <cebtenzzre (at) gmail (dot) com>
    
      2# Contributor: Marcel O'Neil <marcel at marceloneil dot com>
    
      3
    
      4pkgname=hyperbeam
    
      5pkgver=0.21.0
    
      6pkgrel=1
    
      7pkgdesc='Shared Browser App'
    
      8arch=('x86_64')
    
      9depends=(dbus-glib gtk3 libdbusmenu-gtk2 libindicator-gtk2 nss)
    
      10url='https://hyperbeam.com/'
    
      11license=('custom')
    
      12
    
      13_file="Hyperbeam-${pkgver}.AppImage"
    
      14source=("https://cdn.hyperbeam.com/${_file}")
    
      15sha256sums=('ed4631b5ba93eb9080767826ac8ab8dbdd0dcbcb02c9bb7815081b5191cc77b2')
    
      16
    
      17prepare() {
    
      18  chmod +x "${_file}"
    
      19  "./${_file}" --appimage-extract &> /dev/null
    
      20
    
      21  # update executable path in .desktop file
    
      22  sed -i "s/Exec=/Exec=${pkgname}/" "squashfs-root/resources/assets/xdg.desktop"
    
      23}
    
      24
    
      25package() {
    
      26  cd squashfs-root/
    
      27  chmod 755 -R .
    
      28
    
      29  # application
    
      30  install -dm 755 "${pkgdir}/opt/${pkgname}"
    
      31  cp -a . "${pkgdir}/opt/${pkgname}"
    
      32
    
      33  # executable
    
      34  install -dm 755 "${pkgdir}/usr/bin"
    
      35  ln -s "/opt/${pkgname}/${pkgname}" "${pkgdir}/usr/bin"
    
      36
    
      37  # .desktop file
    
      38  install -Dm 644 "resources/assets/xdg.desktop" "${pkgdir}/usr/share/applications/${pkgname}.desktop"
    
      39
    
      40  # icons
    
      41  for i in 16 24 32 48 64 128 256 512 1024; do
    
      42    install -Dm 644 "resources/assets/icons/png/${i}x${i}.png" \
    
      43      "${pkgdir}/usr/share/icons/hicolor/${i}x${i}/apps/${pkgname}.png"
    
      44  done
    
      45}
    
      46

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