CVE-2026-78122

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 4.0

8.3CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVSS 3.1

7.4CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-25)

CWE

CWE-1220

Published

2026-08-22

Modified

2026-10-12

Record from

the NVD, synced 2026-10-19

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

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