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CVE-2026-33682— Streamlit on Windows has Unauthenticated SSRF Vulnerability (NTLM Credential Exposure)

Quick assessment

Affected
streamlit streamlit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Streamlit是Streamlit开源的一个面向数据的 Python 应用程序开发框架。 Streamlit 1.54.0之前版本存在代码问题漏洞，该漏洞源于对攻击者提供的文件系统路径验证不当，可能导致服务器端请求伪造和凭据泄露。

CVSS 4.7 · Medium EPSS 0.41% · P33
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I. Basic Information for CVE-2026-33682

Vulnerability Information
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Vulnerability Title
Streamlit on Windows has Unauthenticated SSRF Vulnerability (NTLM Credential Exposure)
Source: CVE Program / CVE List V5
Vulnerability Description
Streamlit is a data oriented application development framework for python. Streamlit Open Source versions prior to 1.54.0 running on Windows hosts have an unauthenticated Server-Side Request Forgery (SSRF) vulnerability. The vulnerability arises from improper validation of attacker-supplied filesystem paths. In certain code paths, including within the `ComponentRequestHandler`, filesystem paths are resolved using `os.path.realpath()` or `Path.resolve()` before sufficient validation occurs. On Windows systems, supplying a malicious UNC path (e.g., `\\attacker-controlled-host\share`) can cause the Streamlit server to initiate outbound SMB connections over port 445. When Windows attempts to authenticate to the remote SMB server, NTLMv2 challenge-response credentials of the Windows user running the Streamlit process may be transmitted. This behavior may allow an attacker to perform NTLM relay attacks against other internal services and/or identify internally reachable SMB hosts via timing analysis. The vulnerability has been fixed in Streamlit Open Source version 1.54.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Streamlit 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Streamlit是Streamlit开源的一个面向数据的 Python 应用程序开发框架。 Streamlit 1.54.0之前版本存在代码问题漏洞，该漏洞源于对攻击者提供的文件系统路径验证不当，可能导致服务器端请求伪造和凭据泄露。
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
streamlit streamlit < 1.54.0 -

II. Public POCs for CVE-2026-33682

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III. Intelligence Information for CVE-2026-33682

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Patches & Fixes for CVE-2026-33682 (1)

Vendor Advisories for CVE-2026-33682 (1)

Vendor Pages for CVE-2026-33682 (1)

IV. Related Vulnerabilities

Same product: streamlit
Same vendor: streamlit
Same weakness: CWE-918

V. Comments for CVE-2026-33682

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