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CVE-2026-93326— Crafted Git build source can bypass certain policy validation

Quick assessment

Affected
moby BuildKit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在特定的构建方式下，针对 Git 源代码的构建步骤可能会绕过某些策略验证规则。一个恶意的构建定义可以在执行 Git clone 时，使代码库看起来像是来自一个不同于其实际来源的远程 URL。如果策略执行更严格的验证（例如，基于提交 SHA、提交数据或签名等），则所有这些验证仍然会正确生效。

CVSS 6.0 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-93326

Vulnerability Information
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Vulnerability Title
Crafted Git build source can bypass certain policy validation
Source: CVE Program / CVE List V5
Vulnerability Description
A build step for a Git source, crafted in a specific way, can bypass some policy validation rules. A malicious build definition can make the repository look like it is coming from a different remote URL than it really is when Git clone is happening. If policy is doing more stricter validation, for example based on commit SHA, commit data, or signatures, then all these validations still apply correctly.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的行为次序：规范化之前验证
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
moby BuildKit 0 ~ 0.33.0 -

II. Public POCs for CVE-2026-93326

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III. Intelligence Information for CVE-2026-93326

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Vendor Pages for CVE-2026-93326 (1)

Other References for CVE-2026-93326 (1)

Same Patch Batch · moby · 2026-10-05 · 8 CVEs total

CVE-2026-93318 7.5 HIGH Cache poisoning via unvalidated image layer DiffIDs
CVE-2026-93316 7.1 HIGH Starting daemon with --cdi-disabled flag can lead to panic on specific builds
CVE-2026-93322 6.9 MEDIUM Malformed MergeOp can crash the BuildKit daemon
CVE-2026-93323 6.8 MEDIUM Oversized Dockerfile or .dockerignore can exhaust buildkitd memory
CVE-2026-93320 6.0 MEDIUM BuildKit improperly handles special files in build snapshots
CVE-2026-93317 5.9 MEDIUM Container blob cache can accept unverified content
CVE-2026-93319 5.7 MEDIUM A malicious frontend can cause a daemon panic

IV. Related Vulnerabilities

Same product: BuildKit
Same vendor: moby
Same weakness: CWE-180

V. Comments for CVE-2026-93326

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