Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-29045— Hono: Arbitrary file access via serveStatic vulnerability

Quick assessment

Affected
honojs hono
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.12.4之前版本存在安全漏洞，该漏洞源于使用serveStatic与基于路由的中间件保护时URL解码不一致，可能导致包含编码斜杠的路径绕过中间件保护，从而未经授权访问受保护的静态资源。

CVSS 7.5 · High EPSS 0.62% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-29045

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Hono: Arbitrary file access via serveStatic vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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 decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
URL编码处理不恰当(Hex编码)
Source: CVE Program / CVE List V5
Vulnerability Title
Hono 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.12.4之前版本存在安全漏洞，该漏洞源于使用serveStatic与基于路由的中间件保护时URL解码不一致，可能导致包含编码斜杠的路径绕过中间件保护，从而未经授权访问受保护的静态资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
honojs hono < 4.12.4 -

II. Public POCs for CVE-2026-29045

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9408 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-29045

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-29045 (1)

Vendor Advisories for CVE-2026-29045 (1)

Same Patch Batch · honojs · 2026-03-04 · 3 CVEs total

CVE-2026-29085 6.5 MEDIUM Hono: SSE Control Field Injection via CR/LF in writeSSE()
CVE-2026-29086 5.4 MEDIUM Hono: Cookie Attribute Injection via Unsanitized domain and path in setCookie()

IV. Related Vulnerabilities

Same product: hono
Same vendor: honojs
Same weakness: CWE-177

V. Comments for CVE-2026-29045

No comments yet

Leave a comment