Docker Engine AuthZ plugin bypass via Content-Length: 0 request body omission
CVE-2024-41110 is a regression vulnerability in Docker Engine (Moby) affecting deployments that use authorization plugins (AuthZ) to make access-control decisions based on request and/or response bodies. By sending a specially crafted Docker Engine API request with a declared Content-Length of 0 while still including a body, an Engine API client can cause the daemon to forward the request or response to the authorization plugin without the body. The daemon, however, still processes the actual body. As a result, an authorization plugin that would have denied the operation after inspecting the body may instead allow it because the body is absent from the plugin’s view. The issue was originally discovered and fixed in Docker Engine v18.09.1 in January 2019, but that fix was not carried forward into later major versions, resulting in a regression identified again in 2024.
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Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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Recent activity
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A prior Docker authorization bypass vulnerability where a request could declare Content-Length: 0 while still including a body, causing the AuthZ plugin to receive an empty body while the Docker daemon processed the real body.
A previously known Docker-related authorization bypass vulnerability referenced as the earlier flaw for which CVE-2026-34040 is an incomplete fix.
A previously disclosed maximum-severity vulnerability in Docker Engine referenced as the root issue whose incomplete remediation led to CVE-2026-34040.
A critical authorization bypass in Docker Engine where specially crafted API requests (Content-Length: 0) can cause the daemon to forward requests to authorization (AuthZ) plugins without the request body, potentially leading to unauthorized actions including privilege escalation.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.