CVE-2026-78122
docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems
CVSS 4.0 8.3 HIGHCVSS 3.1 7.4 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-78122
Publisheddocker-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.
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CVE-2026-78122 · CVE overview and exploitation status
cve-program · CVE-2026-78122
- https://github.com/Tecnativa/docker-socket-proxy/issues/182
- 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/pull/183
- https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732
- https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems
Related changes
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