TI-2026-68040 Aliases CVE-2026-93326

Git source policy validation bypass in moby BuildKit

LOW 26CWE-180Published 2026-10-05 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: Low · High · None
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

moby BuildKit versions through 0.33.0 can have Git source policy validation bypassed. A build step written in a specific way makes the repository appear to come from a different remote URL during Git clone, so some validation rules are skipped (CWE-180). A remote attacker with low privileges can use a malicious build definition to do this. Stricter policy checks based on commit SHA, commit data or signatures still apply.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00249 16th percentileScored 2026-11-07

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
moby	BuildKit	up to 0.33.0	—	No fix listed	CNA

BuildKit Vendormoby Affected up to 0.33.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:mobyproject:buildkit::::::::	—	—	Mobyproject

cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* Versions — — ·Mobyproject

Remediation

The sources list no fixed version for BuildKit. Red Hat rates the issue Moderate and lists Red Hat Quay 3 as affected with no plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Quay 3	Affected	No fix yet: Fix deferred

Not affected: 1 product

Red Hat Hardened Images

Timeline

2026-10-06 Threatist record created from CVE-2026-93326
2026-10-06 CISA SSVC decision points changed
2026-10-06 Priority changed: MEDIUM → LOW
2026-10-20 Affected versions changed · Red Hat
2026-10-20 CVSS score added · Red Hat
2026-10-21 Affected versions changed · Red Hat

References

Patch 1

https://github.com/moby/buildkit/releases/tag/v0.33.1

Advisory 1

https://github.com/moby/buildkit/security/advisories/GHSA-66hf-6vf5-87hc

TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
TI-2021-12512 Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx CVSS 3.1HIGH 7.1
TI-2024-27462 Moby authz zero length regression CVSS 3.1CRITICAL 10.0
TI-2024-15672 BuildKit interactive containers API does not validate entitlements check CVSS 3.1CRITICAL 9.8
TI-2024-15671 BuildKit possible host system access from mount stub cleaner CVSS 3.1CRITICAL 10.0
TI-2026-26365 Moby: AuthZ plugin bypass with oversized request body CVSS 3.1HIGH 8.8

See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences