docker-socket-proxy fails to properly gate read endpoints in the /containers Docker API namespace when the CONTAINERS environment variable is set. Attackers can use GET requests to /containers/{id}/archive, /containers/{id}/export, /containers/{id}/logs, and /containers/{id}/top to read arbitrary files and download entire container filesystems as tar archives.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Tecnativa docker-socket-proxy unaffected
Version Status Constraints
0 affected ≤ 0.5.0

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732 cve-icon cve-icon
https://github.com/Tecnativa/docker-socket-proxy cve-icon cve-icon
https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61 cve-icon cve-icon
https://github.com/Tecnativa/docker-socket-proxy/issues/182 cve-icon cve-icon
https://github.com/Tecnativa/docker-socket-proxy/pull/183 cve-icon cve-icon
https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems cve-icon cve-icon
History

Sat, 22 Aug 2026 23:15:00 +0000

Type Values Removed Values Added
Description docker-socket-proxy fails to properly gate read endpoints in the /containers Docker API namespace when the CONTAINERS environment variable is set. Attackers can use GET requests to /containers/{id}/archive, /containers/{id}/export, /containers/{id}/logs, and /containers/{id}/top to read arbitrary files and download entire container filesystems as tar archives.
Title docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems
Weaknesses CWE-1220
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-22T23:06:32.896Z

Reserved: 2026-08-22T22:56:18.102Z

Link: CVE-2026-78122

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-22T23:16:22.923

Modified: 2026-08-22T23:16:22.923

Link: CVE-2026-78122

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses