CVE-2026-78122

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.

References

https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems

https://github.com/Tecnativa/docker-socket-proxy/pull/183

https://github.com/Tecnativa/docker-socket-proxy/issues/182

https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61

https://github.com/Tecnativa/docker-socket-proxy

https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4