BotSharp’s Starter Ships a Hard-Coded Signing Key. Every Agent Built On It Inherits the Forgery Path.

The signing key for the framework’s login tokens sits in the starter template’s configuration file, in the repository, in plain text. This flaw, identified as CVE-2026-108860, represents a failure of trust-through-defaults at the supply-chain layer. A framework that ships its trust root as a source constant provides every agent built on its starter with a pre-baked forgery path. This issue sits one level below the pattern described in our previous analysis, Ships Without Auth . In those cases, the control planes lacked authentication entirely. Here, the authentication gate exists and functions as designed.

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