GO-2026-6255Published

BuildKit: Custom frontend could bypass Seccomp/AppArmor

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cve-program · CVE-2026-61711

Published

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could place an invalid SecurityMode value in a crafted build request, and executor/oci/spec_linux.go treated the unsupported value as a non-sandbox mode without requiring the security.insecure entitlement. This disabled Seccomp and AppArmor protections for the build container even though Linux capabilities remained restricted. This issue is fixed in version 0.31.1.

Source published: 19 Aug 2026 20:03:38 UTC
Source modified: 20 Aug 2026 13:19:05 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

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CVSS 4.0 · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

euvd · EUVD-2026-62838

Published

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EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

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datePublished: Aug 19, 2026, 8:03:38 PM

dateUpdated: Aug 20, 2026, 1:19:05 PM

2 related source bulletins · separate from aliases

WID-SEC-W-2026-2111: docker: Mehrere Schwachstellen

CVE-2026-61711 · CVE-2026-61712 · CVE-2026-61801 · CVE-2026-75593

msrc_CVE-2026-61711: BuildKit: Custom frontend could bypass Seccomp/AppArmor

CVE-2026-61711

Source published: Aug 19, 2026, 8:03:38 PM (timezone not stated)
Source modified: Aug 20, 2026, 1:19:05 PM (timezone not stated)
Saved here: 14 Nov 2026 03:04:29 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

nvd · CVE-2026-61711

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-20

Original publisher date fields

published: 2026-08-19T20:17:19.567

lastModified: 2026-09-09T21:15:59.613

Source published: 19 Aug 2026 20:17:19 UTC
Source modified: 9 Sep 2026 21:15:59 UTC
Saved here: 25 Oct 2026 14:19:28 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-7236-3392-c5c6

Published

### Impact A custom frontend could send a crafted build request that disabled Seccomp and AppArmor protections for the build container, even if the user did not explicitly allow the `security.insecure` entitlement. Other security measures, like Linux capabilities were still applied to these containers. ### Patches Problem has been fixed in versions v0.31.1+ ### Workarounds Only use BuildKit frontends from trusted providers.

Source published: 19 Aug 2026 20:23:50 UTC
Source modified: 10 Sep 2026 03:51:13 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Publisher rating · MODERATE

osv · GO-2026-6255

Published

BuildKit: Custom frontend could bypass Seccomp/AppArmor in github.com/moby/buildkit

Source published: 25 Aug 2026 15:00:08 UTC
Source modified: 1 Sep 2026 21:56:11 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

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