CVE-2026-24473: Hono has an Arbitrary Key Read in Serve static Middleware (Cloudflare Workers Adapter)

January 27, 2026 (updated February 4, 2026)

Serve static Middleware for the Cloudflare Workers adapter contains an information disclosure vulnerability that may allow attackers to read arbitrary keys from the Workers environment. Improper validation of user-controlled paths can result in unintended access to internal asset keys.

References

github.com/advisories/GHSA-w332-q679-j88p
github.com/honojs/hono
github.com/honojs/hono/commit/cf9a78db4d0a19b117aee399cbe9d3a6d9bfd817
github.com/honojs/hono/releases/tag/v4.11.7
github.com/honojs/hono/security/advisories/GHSA-w332-q679-j88p
nvd.nist.gov/vuln/detail/CVE-2026-24473

Code Behaviors & Features

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