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CVE-2025-0495— Secrets leakage to telemetry endpoint via cache backend configuration via buildx

Quick assessment

Affected
docker buildx
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

buildx是Docker开源的一个 Docker CLI 插件，用于通过 BuildKit 扩展构建功能。 buildx存在安全漏洞，该漏洞源于缓存后端支持凭据时，安全值可能被无意中捕获到OpenTelemetry跟踪中。

AI Predicted 5.9 Difficulty: Trivial EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-0495

Vulnerability Information
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Vulnerability Title
Secrets leakage to telemetry endpoint via cache backend configuration via buildx
Source: CVE Program / CVE List V5
Vulnerability Description
Buildx is a Docker CLI plugin that extends build capabilities using BuildKit. Cache backends support credentials by setting secrets directly as attribute values in cache-to/cache-from configuration. When supplied as user input, these secure values may be inadvertently captured in OpenTelemetry traces as part of the arguments and flags for the traced CLI command. OpenTelemetry traces are also saved in BuildKit daemon's history records. This vulnerability does not impact secrets passed to the Github cache backend via environment variables or registry authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
buildx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
buildx是Docker开源的一个 Docker CLI 插件，用于通过 BuildKit 扩展构建功能。 buildx存在安全漏洞，该漏洞源于缓存后端支持凭据时，安全值可能被无意中捕获到OpenTelemetry跟踪中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
docker buildx 0 ~ 0.21.2 -

II. Public POCs for CVE-2025-0495

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III. Intelligence Information for CVE-2025-0495

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Vendor Pages for CVE-2025-0495 (1)

IV. Related Vulnerabilities

Same vendor: docker
Same weakness: CWE-532

V. Comments for CVE-2025-0495

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