Quick answers
- Is CVE-2026-103433 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103433 being exploited in the wild.
- How severe is CVE-2026-103433?
- Informational severity, published 5 October 2026.
- Which products and versions are affected?
- Docker Buildx.
- Is there a fix for CVE-2026-103433?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-103433 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-103433?
- Check whether you run Docker Buildx. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an authorization bypass in Docker Buildx Bake's fs.read entitlement validation. Untrusted Bake definitions can circumvent permission checks by using pathless secrets whose IDs are interpreted as client-side pathnames, or by referencing local OCI image layouts with different path representations that bypass validation logic. The flaw allows reading or consuming resources outside the project without proper approval.
Affected products
- Docker Buildx