Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
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-ac
FAQ
What is CVE-2026-78122?
CVE-2026-78122 is a vulnerability with a CVSS score of 7.4 (HIGH). 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}/ar...
How severe is CVE-2026-78122?
CVE-2026-78122 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-78122?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.