CVE-2026-78122CWE-1220

CVE-2026-78122

High · published August 23, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
24.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
8.3 · CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00322 · 24.8th percentile
Weakness
CWE-1220 · Insufficient Granularity of Access Control
Published
2026-08-23T03:16Z
References (7)
https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732 · [email protected]https://github.com/Tecnativa/docker-socket-proxy · [email protected]https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61 · [email protected]https://github.com/Tecnativa/docker-socket-proxy/issues/182 · [email protected]https://github.com/Tecnativa/docker-socket-proxy/pull/183 · [email protected]https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems · [email protected]https://github.com/Tecnativa/docker-socket-proxy/issues/182 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 22 AUG 23:06Z
    docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems
    cvelistv5