What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-27 · updated 2026-06-17
• Weakness: CWE-200

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, 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. Version 4.11.7 contains a patch for the issue.

Affected products

• honojs hono: before 4.11.7 — fixed in 4.11.7

How to fix

Upgrade to a fixed version: honojs hono 4.11.7. Check the vendor advisory for mitigations.

References

• https://github.com/honojs/hono/commit/cf9a78db4d0a19b117aee399cbe9d3a6d9bfd817
• https://github.com/honojs/hono/releases/tag/v4.11.7
• https://github.com/honojs/hono/security/advisories/GHSA-w332-q679-j88p

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