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CVE-2026-53970— ZeroBrew version 0.3.1 and prior Missing Checksum Verification RCE via shim.rb

Quick assessment

Affected
lucasgelfond ZeroBrew
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

lucas gelfond zerobrew是lucas gelfond个人开发者的一款软件开发工具组件。 lucas gelfond zerobrew 0.3.1及之前版本存在软件供应链问题漏洞，该漏洞源于Ruby兼容层缺少完整性验证且未进行校验和验证，可能导致网络攻击者通过替换恶意内容执行任意代码。

CVSS 7.5 · High EPSS 0.25% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
lucasgelfond ZeroBrew ≤ 0.3.1 affected
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I. Basic Information for CVE-2026-53970

Vulnerability Information
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Vulnerability Title
ZeroBrew version 0.3.1 and prior Missing Checksum Verification RCE via shim.rb
Source: CVE Program / CVE List V5
Vulnerability Description
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 / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
lucas gelfond zerobrew 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
lucas gelfond zerobrew是lucas gelfond个人开发者的一款软件开发工具组件。 lucas gelfond zerobrew 0.3.1及之前版本存在软件供应链问题漏洞，该漏洞源于Ruby兼容层缺少完整性验证且未进行校验和验证，可能导致网络攻击者通过替换恶意内容执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
lucasgelfond ZeroBrew 0 ~ 0.3.1 -

II. Public POCs for CVE-2026-53970

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8590 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-53970

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Vendor Advisories for CVE-2026-53970 (1)

Other References for CVE-2026-53970 (1)

IV. Related Vulnerabilities

Same weakness: CWE-494