CVE-2026-78122
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.3 HIGHCVSS: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/M
- EPSS
- 0.32% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1220
- Source
- disclosure@vulncheck.com
References
- https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732
- https://github.com/Tecnativa/docker-socket-proxy
- https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61
- https://github.com/Tecnativa/docker-socket-proxy/issues/182
- https://github.com/Tecnativa/docker-socket-proxy/pull/183
- https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems
- https://github.com/Tecnativa/docker-socket-proxy/issues/182
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.