Is there a public exploit for CVE-2026-121541?

No public exploit for CVE-2026-121541 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121541?

CVE-2026-121541 scores CVSS 5.6 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.11%.

What does CVE-2026-121541 affect?

CVE-2026-121541 affects Docker Docker Buildx.

5.6 Medium

In Docker Buildx versions v0.19.0 through v0.38.0, an untrusted Bake definition that builds multiple targets together may expose files…

CVE-2026-121541

In Docker Buildx versions v0.19.0 through v0.38.0, an untrusted Bake definition that builds multiple targets together may expose files accessible to the Buildx client without the expected fs.read approval. Under certain conditions, filesystem paths from some targets are not verified against the approved entitlements. Users who run untrusted Bake definitions may be affected. The issue is fixed in v0.38.1.

Assessment

CVSS: 5.6 (v4.0)
Severity: Medium
EPSS: 0.11% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 6 November 2026
Affected: Docker · Docker Buildx
Assigner: Docker

CVSS vectorCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://github.com/docker/buildx/security/advisories/GHSA-xg6v-cv2h-2w5h

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