6.9

CVE-2026-103433: docker docker buildx Missing Authorization

CVSS: 6.9v4.0MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-103433DEBIAN-CVE-2026-103433
Published 05-10-2026Last modified 06-10-2026
Open JSON

Vulnerability summary

CVE-2026-103433 is a medium (CVSS 6.9) Missing Authorization vulnerability in docker docker buildx. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-10-2026
    PublishedVulnerability first disclosed.
  2. 06-10-2026
    Last modifiedVulnerability information updated.

Description

Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202620-10-2026
EPSS score
0.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • docker-buildxAll versions (No fix recorded)
Docker1 product
Ubuntu1 product
  • docker-buildxAll versions (No fix recorded)

3 vendors · 3 products

References

7 links