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.
References7
- gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732
- github.com/Tecnativa/docker-socket-proxy
- github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cf…
- github.com/Tecnativa/docker-socket-proxy/issues/182
- github.com/Tecnativa/docker-socket-proxy/pull/183
- www.vulncheck.com/advisories/docker-socket-proxy-through-insuff…
- github.com/Tecnativa/docker-socket-proxy/issues/182
Metrics
- CVSS 3.1
-
7.4
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - CVSS 4.0
-
8.3
HIGH
Score source: CNA
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/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 — exploit probability
- 0% percentile: 24 · as of 9 November 2026
- CWE
- CWE-1220
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.