moby BuildKit up to 0.33.0 missing initialization

Summaryinfo

A vulnerability labeled as very critical has been found in moby BuildKit up to 0.33.0. Impacted is an unknown function. The manipulation results in missing initialization. This vulnerability is reported as CVE-2026-93320. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in moby BuildKit up to 0.33.0. It has been classified as very critical. Affected is an unknown part. The manipulation with an unknown input leads to a missing initialization vulnerability. CWE is classifying the issue as CWE-456. The product does not initialize critical variables, which causes the execution environment to use unexpected values. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

BuildKit may be tricked into performing file actions with special file inodes where regular files are expected. Special files may block operations or, on rootful workers, allow unintended host device access.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-93320 since 09/17/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/05/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• moby

Name

• BuildKit

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33.0

Website

• Product: https://github.com/moby/buildkit/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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