pencil-dev-appimage

maintainer Crosery · 1 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The package downloads a prebuilt AppImage from a non-whitelisted host (pencil.dev), which is an unverifiable executable; if the domain were compromised, an attacker could silently replace the binary, posing a supply-chain risk.

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:15 source=("Pencil-linux-x86_64-${pkgver}.AppImage::https://www.pencil.dev/download/Pencil-linux-x86_64.AppImage"

MEDIUM AI review llm_review

An AI model (qwen/qwen3-235b-a22b-2507) reviewed this and agrees it is MEDIUM (confidence 90%): The package downloads a prebuilt AppImage from a non-whitelisted host (pencil.dev), which is an unverifiable executable; if the domain were compromised, an attacker could silently replace the binary, posing a supply-chain risk.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Crosery <luoxi2024@gmail.com>
    
      2
    
      3pkgname=pencil-dev-appimage
    
      4pkgver=1.2.0
    
      5pkgrel=1
    
      6pkgdesc="Design on canvas. Land in code. Increases engineering speed by bringing designing directly into your IDE. (AppImage)"
    
      7arch=('x86_64')
    
      8url="https://pencil.dev"
    
      9license=('custom')
    
      10provides=('pencil-dev')
    
      11conflicts=('pencil-dev' 'pencil-dev-bin')
    
      12depends=('fuse2' 'zlib' 'hicolor-icon-theme')
    
      13install="${pkgname}.install"
    
      14options=('!strip' '!debug')
    
      15source=("Pencil-linux-x86_64-${pkgver}.AppImage::https://www.pencil.dev/download/Pencil-linux-x86_64.AppImage"
    
      16        "LICENSE"
    
      17        "${pkgname}.install")
    
      18sha256sums=('f1220a87d52da551fa729e2c53014388a3774ed4634428559aa0eb10dcc30510'
    
      19            'SKIP'
    
      20            'SKIP')
    
      21noextract=("Pencil-linux-x86_64-${pkgver}.AppImage")
    
      22
    
      23prepare() {
    
      24    chmod +x "${srcdir}/Pencil-linux-x86_64-${pkgver}.AppImage"
    
      25    "${srcdir}/Pencil-linux-x86_64-${pkgver}.AppImage" --appimage-extract >/dev/null 2>&1
    
      26}
    
      27
    
      28package() {
    
      29    # Install AppImage
    
      30    install -Dm755 "${srcdir}/Pencil-linux-x86_64-${pkgver}.AppImage" \
    
      31        "${pkgdir}/opt/${pkgname}/pencil-dev.AppImage"
    
      32
    
      33    # Create launcher script
    
      34    install -d "${pkgdir}/usr/bin"
    
      35    cat > "${pkgdir}/usr/bin/pencil-dev" << 'LAUNCHER'
    
      36#!/bin/bash
    
      37exec /opt/pencil-dev-appimage/pencil-dev.AppImage --no-sandbox "$@"
    
      38LAUNCHER
    
      39    chmod 755 "${pkgdir}/usr/bin/pencil-dev"
    
      40
    
      41    # Install desktop entry from extracted AppImage
    
      42    if [ -f "${srcdir}/squashfs-root/pencil.desktop" ]; then
    
      43        install -Dm644 "${srcdir}/squashfs-root/pencil.desktop" \
    
      44            "${pkgdir}/usr/share/applications/pencil-dev.desktop"
    
      45        # Fix desktop entry
    
      46        sed -i 's|^Exec=.*|Exec=pencil-dev %U|' \
    
      47            "${pkgdir}/usr/share/applications/pencil-dev.desktop"
    
      48        sed -i 's|^Name=.*|Name=Pencil|' \
    
      49            "${pkgdir}/usr/share/applications/pencil-dev.desktop"
    
      50    else
    
      51        # Fallback desktop entry
    
      52        install -d "${pkgdir}/usr/share/applications"
    
      53        cat > "${pkgdir}/usr/share/applications/pencil-dev.desktop" << EOF
    
      54[Desktop Entry]
    
      55Name=Pencil
    
      56Comment=Design on canvas. Land in code.
    
      57Exec=pencil-dev %U
    
      58Icon=pencil-dev
    
      59Type=Application
    
      60Categories=Development;Graphics;
    
      61MimeType=x-scheme-handler/pencil;
    
      62EOF
    
      63        chmod 644 "${pkgdir}/usr/share/applications/pencil-dev.desktop"
    
      64    fi
    
      65
    
      66    # Install icons from extracted AppImage
    
      67    for size in 16 32 48 64 128 256 512; do
    
      68        icon="${srcdir}/squashfs-root/usr/share/icons/hicolor/${size}x${size}/apps/pencil.png"
    
      69        if [ -f "${icon}" ]; then
    
      70            install -Dm644 "${icon}" \
    
      71                "${pkgdir}/usr/share/icons/hicolor/${size}x${size}/apps/pencil-dev.png"
    
      72        fi
    
      73    done
    
      74
    
      75    # Fallback: use any .png found in squashfs-root
    
      76    if [ ! -f "${pkgdir}/usr/share/icons/hicolor/256x256/apps/pencil-dev.png" ]; then
    
      77        for icon in "${srcdir}"/squashfs-root/*.png; do
    
      78            if [ -f "${icon}" ]; then
    
      79                install -Dm644 "${icon}" \
    
      80                    "${pkgdir}/usr/share/icons/hicolor/256x256/apps/pencil-dev.png"
    
      81                break
    
      82            fi
    
      83        done
    
      84    fi
    
      85
    
      86    # Install MCP server to a stable path (AppImage mount point changes on each launch)
    
      87    if [ -f "${srcdir}/squashfs-root/resources/app.asar.unpacked/out/mcp-server-linux-x64" ]; then
    
      88        install -Dm755 "${srcdir}/squashfs-root/resources/app.asar.unpacked/out/mcp-server-linux-x64" \
    
      89            "${pkgdir}/opt/${pkgname}/mcp-server"
    
      90    fi
    
      91
    
      92    # Install license
    
      93    if [ -f "${srcdir}/LICENSE" ]; then
    
      94        install -Dm644 "${srcdir}/LICENSE" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
    
      95    fi
    
      96}
    
      97
    
      98

Changes since previous scan

--- PKGBUILD @ 2026-07-21 00:24
+++ PKGBUILD @ 2026-08-03 00:08
@@ -1,7 +1,7 @@
 # Maintainer: Crosery <luoxi2024@gmail.com>
 
 pkgname=pencil-dev-appimage
-pkgver=1.1.70
+pkgver=1.2.0
 pkgrel=1
 pkgdesc="Design on canvas. Land in code. Increases engineering speed by bringing designing directly into your IDE. (AppImage)"
 arch=('x86_64')
@@ -15,7 +15,7 @@
 source=("Pencil-linux-x86_64-${pkgver}.AppImage::https://www.pencil.dev/download/Pencil-linux-x86_64.AppImage"
         "LICENSE"
         "${pkgname}.install")
-sha256sums=('1b32cb8f28256dfe47e45f889e0c6a76ad3a7c3dc91423cb8eb797dc927d005b'
+sha256sums=('f1220a87d52da551fa729e2c53014388a3774ed4634428559aa0eb10dcc30510'
             'SKIP'
             'SKIP')
 noextract=("Pencil-linux-x86_64-${pkgver}.AppImage")

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 07:16:26	MEDIUM	2
2026-07-21 00:24:15	LOW	2
2026-07-20 00:19:49	LOW	2
2026-07-19 00:17:08	LOW	2
2026-07-18 00:14:48	LOW	2
2026-07-17 00:06:16	LOW	2
2026-07-16 00:05:41	LOW	2