CVE-2026-53970 — ZeroBrew version 0.3.1 and prior Missing Checksum Verification RCE via shim.rb
ZeroBrew version 0.3.1 and prior contains a missing integrity verification vulnerability in the Ruby compatibility shim that allows network attackers to execute arbitrary code b…
Published: 2026-08-14 · CVSS: 7.5 · CVSS 4.0
ZeroBrew version 0.3.1 and prior contains a missing integrity verification vulnerability in the Ruby compatibility shim that allows network attackers to execute arbitrary code by substituting malicious content at formula resource or URL-based patch URLs without checksum validation. Attackers can intercept or replace downloads for secondary resource and patch paths in shim.rb, injecting attacker-controlled build steps or source tree modifications that execute during source builds via 'zb install --build-from-source' without any integrity warning.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7