tabnine

MEDIUM

maintainer orphaned 0 votes scanned 2026-11-01 00:21:48.120785

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Why flagged

The PKGBUILD downloads a prebuilt proprietary binary from update.tabnine.com (the official Tabnine update server) and installs it directly into /usr/bin. While update.tabnine.com is the legitimate vendor update domain, this is still a prebuilt binary from a non-source, non-standard host with no source code available for inspection. The sha256sums provide integrity checking against a known-good hash, which mitigates substitution attacks somewhat, but the binary itself is opaque and could contain anything. This is a classic medium-severity supply-chain concern: not clearly malicious, but an executed proprietary binary from a vendor update endpoint rather than a verifiable source build. The cheaper model's assessment is correct here — this is a genuine medium risk pattern (prebuilt binary, no source, proprietary), not a false positive.

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:11 source_x86_64=("$pkgname-$pkgver-x86_64.zip::https://update.tabnine.com/bundles/$pkgver/x86_64-unknown-linux-musl/TabNine.zip")

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 proprietary binary from update.tabnine.com (the official Tabnine update server) and installs it directly into /usr/bin. While update.tabnine.com is the legitimate vendor update domain, this is still a prebuilt binary from a non-source, non-standard host with no source code available for inspection. The sha256sums provide integrity checking against a known-good hash, which mitigates substitution attacks somewhat, but the binary itself is opaque and could contain anything. This is a classic medium-severity supply-chain concern: not clearly malicious, but an executed proprietary binary from a vendor update endpoint rather than a verifiable source build. The cheaper model's assessment is correct here — this is a genuine medium risk pattern (prebuilt binary, no source, proprietary), not a false positive.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Luis Martinez <luis dot martinez at disroot dot org>
    
      2
    
      3pkgname=tabnine
    
      4pkgver=3.7.25
    
      5pkgrel=1
    
      6pkgdesc="AI-powered autocompletion engine"
    
      7arch=('x86_64' 'i686')
    
      8url="https://tabnine.com"
    
      9license=('custom:proprietary')
    
      10source=('TERMS')
    
      11source_x86_64=("$pkgname-$pkgver-x86_64.zip::https://update.tabnine.com/bundles/$pkgver/x86_64-unknown-linux-musl/TabNine.zip")
    
      12source_i686=("$pkgname-$pkgver-i686.zip::https://update.tabnine.com/bundles/$pkgver/i686-unknown-linux-musl/TabNine.zip")
    
      13sha256sums=('77177f1e237c7139a241da39c9f7ef736e0c2677587e4a1fc4959097b93ba99e')
    
      14sha256sums_x86_64=('3a7f92a249b6f8157725b2302bca0f3baf3cd85396065812680a77540c91f913')
    
      15sha256sums_i686=('068ee1f0f676cd1a3edb718e8cc3ddf0ae2e82474a5cca88e9474b9b5469befa')
    
      16
    
      17package() {
    
      18	install -D TabNine -t "$pkgdir/usr/bin/"
    
      19	ln -s /usr/bin/TabNine "$pkgdir/usr/bin/tabnine"
    
      20	install -Dm 644 TERMS -t "$pkgdir/usr/share/licenses/$pkgname/"
    
      21}
    
      22

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