CVE-2026-78122docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems
Updated under an hour ago ()
Does this affect you?
It affects Tecnativa docker-socket-proxy. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-1220
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Tecnativa docker-socket-proxy tecnativa:docker_socket_proxy (from the name) | through 0.5.0 | CNA record |
References
- https://github.com/Tecnativa/docker-socket-proxy/issues/182issue-tracking
- https://github.com/Tecnativa/docker-socket-proxyproduct
- https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61technical-description
- https://github.com/Tecnativa/docker-socket-proxy/pull/183issue-tracking, patch
- https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732exploit
- https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystemsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.