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CVE-2025-48879— OctoPrint Vulnerable to Denial of Service through malformed HTTP request

Quick assessment

Affected
OctoPrint OctoPrint
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.

OctoPrint是OctoPrint开源的一个应用程序。提供了一个快速的Web界面，用于控制消费类3D打印机。 OctoPrint 1.11.1及之前版本存在安全漏洞，该漏洞源于请求处理不当，可能导致拒绝服务。

CVSS 6.5 · Medium EPSS 0.26% · P16
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I. Basic Information for CVE-2025-48879

Vulnerability Information
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Vulnerability Title
OctoPrint Vulnerable to Denial of Service through malformed HTTP request
Source: CVE Program / CVE List V5
Vulnerability Description
OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that make the web server component become unresponsive. The issue can be triggered by a broken multipart/form-data request lacking an end boundary to any of OctoPrint's endpoints implemented through the octoprint.server.util.tornado.UploadStorageFallbackHandler request handler. The request handler will get stuck in an endless busy loop, looking for a part of the request that will never come. As Tornado is single-threaded, that will effectively block the whole web server. The vulnerability has been patched in version 1.11.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
分隔符转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OctoPrint 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OctoPrint是OctoPrint开源的一个应用程序。提供了一个快速的Web界面，用于控制消费类3D打印机。 OctoPrint 1.11.1及之前版本存在安全漏洞，该漏洞源于请求处理不当，可能导致拒绝服务。
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
OctoPrint OctoPrint < 1.11.2 -

II. Public POCs for CVE-2025-48879

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III. Intelligence Information for CVE-2025-48879

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Patches & Fixes for CVE-2025-48879 (1)

IV. Related Vulnerabilities

Same product: OctoPrint
Same vendor: OctoPrint
Same weakness: CWE-140

V. Comments for CVE-2025-48879

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