CVE-2026-121541

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-11-03 Modified: 2026-11-06 First seen: 2026-11-03 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Active
S: X
AT: Present
VC: High
VI: None
VA: None

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Docker Docker Buildx 0.19.0 < 0.38.1
Docker Docker Buildx 0.19.0 < 0.38.1

Bug Bounty Relevance

36 / 100
✓ No authentication
✓ Low complexity

CVSS Score

5.6 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/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

EPSS — Exploitation Probability

0.11%
Raw Score 0.001120
Percentile 1.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00112
2026-11-12
0.00112
2026-11-10
0.00112
2026-11-09
0.00112
2026-11-08
0.00112
2026-11-07
0.00112
2026-11-06
0.00112
2026-11-05
0.00112
2026-11-04
0.00112

Intelligence Sources

mitre ref →
nvd ref →