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CVE-2025-52936— Improper Link Resolution Before File Access vulnerability in yrutschle/sslh

Quick assessment

Affected
yrutschle sslh
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.

sslh是Yves Rutschle个人开发者的一个应用协议多路复用器。 sslh 2.2.2之前版本存在后置链接漏洞，该漏洞源于文件访问前链接解析不当。

CVSS 9.3 · Critical EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
yrutschle sslh < 2.2.2 affected
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I. Basic Information for CVE-2025-52936

Vulnerability Information
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Vulnerability Title
Improper Link Resolution Before File Access vulnerability in yrutschle/sslh
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
sslh 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sslh是Yves Rutschle个人开发者的一个应用协议多路复用器。 sslh 2.2.2之前版本存在后置链接漏洞，该漏洞源于文件访问前链接解析不当。
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
yrutschle sslh 0 ~ 2.2.2 -

II. Public POCs for CVE-2025-52936

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10200 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-52936

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IV. Related Vulnerabilities

Same product: sslh
Same weakness: CWE-59

V. Comments for CVE-2025-52936

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