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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Tecnativa | docker-socket-proxy | ≤ 0.5.0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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Legendile7/CVE-2026-78122-POC ★ 0 · Aug 23, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- GitHub Issue #182 issue-tracking
- https://github.com/Tecnativa/docker-socket-proxy product
- https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61 technical-description
- https://github.com/Tecnativa/docker-socket-proxy/pull/183 issue-tracking patch
- https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732 exploit
- VulnCheck Advisory: docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems third-party-advisory