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CVE-2026-22256— Salvo is vulnerable to reflected XSS in the list_html function

Quick assessment

Affected
salvo-rs salvo
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.

salvo是Salvo开源的一个web框架。 salvo 0.88.1之前版本存在跨站脚本漏洞，该漏洞源于list_html函数未正确清理路径，可能导致反射型跨站脚本攻击。

CVSS 8.8 · High EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-22256

Vulnerability Information
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Vulnerability Title
Salvo is vulnerable to reflected XSS in the list_html function
Source: CVE Program / CVE List V5
Vulnerability Description
Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generate an file view of a folder which include a render of the current path, in which its inserted in the HTML without proper sanitation, this leads to reflected XSS using the fact that request path is decoded and normalized in the matching stage but not is inserted raw in the html view (current.path), the only constraint here is for the root path (eg. /files in the PoC example) to have a sub directory (e.g common ones styles/scripts/etc…) so that the matching return the list HTML page instead of the Not Found page. This issue has been patched in version 0.88.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
salvo 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
salvo是Salvo开源的一个web框架。 salvo 0.88.1之前版本存在跨站脚本漏洞，该漏洞源于list_html函数未正确清理路径，可能导致反射型跨站脚本攻击。
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
salvo-rs salvo < 0.88.1 -

II. Public POCs for CVE-2026-22256

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6808 chars
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III. Intelligence Information for CVE-2026-22256

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IV. Related Vulnerabilities

Same product: salvo
Same vendor: salvo-rs
Same weakness: CWE-79

V. Comments for CVE-2026-22256

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