CVE•Published 2026-03-31•Modified 2026-06-16•1 article on news•4 live references•NVD data

CVE-2026-34040Docker · Engine

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 6% of all CVEs

Weaknesses (CWE)

CWE-288Authentication Bypass Using an Alternate Path or Channel

Description

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.

Timeline

Published 2026-03-31

Modified 2026-06-16

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34040

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Docker Engine"

All exposed Docker Engine instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Engine"

HTTP body or banner mentions "Engine" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34040