Hono: Arbitrary file access via serveStatic vulnerability

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-29045 · CVE overview and exploitation status

EUVD-2026-9506

GHSA-q5qw-h33p-qvwr

cve-program · CVE-2026-29045

• https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr
• https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3

euvd · EUVD-2026-9506

• https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr
• https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3

nvd · CVE-2026-29045

• https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3
• https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr

osv · GHSA-q5qw-h33p-qvwr

• https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr
• https://nvd.nist.gov/vuln/detail/CVE-2026-29045
• https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3
• https://github.com/honojs/hono

• Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decodin… · Advisory content revised · 15 Nov 2026