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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-55202— Tinyproxy - Stathost Detection Bypass via Host Header Manipulation

Quick assessment

Affected
tinyproxy tinyproxy
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.

tinyproxy是Tinyproxy团队开源的一个小型、高效的 HTTP/SSL 代理守护程序。 tinyproxy 1.11.3及之前版本存在授权问题漏洞，该漏洞源于stathost检测中对Host标头验证不当，可能导致未经身份验证的攻击者通过注入匹配的Host标头或端口操纵绕过检测访问stats页面，以及远程攻击者触发未授权访问内部代理统计信息或通过透明代理连接错误路由请求以绕过访问控制。

CVSS 8.2 · High EPSS 0.57% · P46

Affected Version Matrix 2

VendorProduct Version RangeStatus
tinyproxy tinyproxy ≤ 1.11.3 affected
09312a185ae25cc486b4ff5987638a7917a48bce unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-55202

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Tinyproxy - Stathost Detection Bypass via Host Header Manipulation
Source: CVE Program / CVE List V5
Vulnerability Description
Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
tinyproxy 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
tinyproxy是Tinyproxy团队开源的一个小型、高效的 HTTP/SSL 代理守护程序。 tinyproxy 1.11.3及之前版本存在授权问题漏洞，该漏洞源于stathost检测中对Host标头验证不当，可能导致未经身份验证的攻击者通过注入匹配的Host标头或端口操纵绕过检测访问stats页面，以及远程攻击者触发未授权访问内部代理统计信息或通过透明代理连接错误路由请求以绕过访问控制。
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
tinyproxy tinyproxy 0 ~ 1.11.3 -

II. Public POCs for CVE-2026-55202

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6729 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-2026-55202

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-55202 (2)

Vendor Advisories for CVE-2026-55202 (1)

Same Patch Batch · tinyproxy · 2026-06-17 · 3 CVEs total

CVE-2026-54387 9.1 CRITICAL Tinyproxy - HTTP Request Smuggling via CL/TE Desynchronization
CVE-2026-54388 9.1 CRITICAL Tinyproxy - HTTP Request Smuggling via Duplicate Content-Length Headers

IV. Related Vulnerabilities

Same product: tinyproxy
Same vendor: tinyproxy
Same weakness: CWE-290

V. Comments for CVE-2026-55202

No comments yet

Leave a comment