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CVE-2025-61780— Rack 安全漏洞

一分钟漏洞结论

影响对象
rack rack
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Rack是Rack开源的一个模块化的Ruby web服务器界面。 Rack 2.2.20之前版本、3.1.18之前版本和3.2.3之前版本存在安全漏洞，该漏洞源于Rack::Sendfile在处理特制标头时可能绕过代理访问限制，导致信息泄露。

CVSS 5.8 · Medium EPSS 0.55% · P44
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一、 漏洞 CVE-2025-61780 基础信息

漏洞信息
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Vulnerability Title
Rack has Possible Information Disclosure Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, a possible information disclosure vulnerability existed in `Rack::Sendfile` when running behind a proxy that supports `x-sendfile` headers (such as Nginx). Specially crafted headers could cause `Rack::Sendfile` to miscommunicate with the proxy and trigger unintended internal requests, potentially bypassing proxy-level access restrictions. When `Rack::Sendfile` received untrusted `x-sendfile-type` or `x-accel-mapping` headers from a client, it would interpret them as proxy configuration directives. This could cause the middleware to send a "redirect" response to the proxy, prompting it to reissue a new internal request that was not subject to the proxy's access controls. An attacker could exploit this by setting a crafted `x-sendfile-type: x-accel-redirect` header, setting a crafted `x-accel-mapping` header, and requesting a path that qualifies for proxy-based acceleration. Attackers could bypass proxy-enforced restrictions and access internal endpoints intended to be protected (such as administrative pages). The vulnerability did not allow arbitrary file reads but could expose sensitive application routes. This issue only affected systems meeting all of the following conditions: The application used `Rack::Sendfile` with a proxy that supports `x-accel-redirect` (e.g., Nginx); the proxy did **not** always set or remove the `x-sendfile-type` and `x-accel-mapping` headers; and the application exposed an endpoint that returned a body responding to `.to_path`. Users should upgrade to Rack versions 2.2.20, 3.1.18, or 3.2.3, which require explicit configuration to enable `x-accel-redirect`. Alternatively, configure the proxy to always set or strip the header, or in Rails applications, disable sendfile completely.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5
Vulnerability Title
Rack 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Rack是Rack开源的一个模块化的Ruby web服务器界面。 Rack 2.2.20之前版本、3.1.18之前版本和3.2.3之前版本存在安全漏洞，该漏洞源于Rack::Sendfile在处理特制标头时可能绕过代理访问限制，导致信息泄露。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
rack rack < 2.2.20 -

二、漏洞 CVE-2025-61780 的公开POC

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三、漏洞 CVE-2025-61780 的情报信息

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CVE-2025-61780 补丁与修复 (3)

CVE-2025-61780 厂商安全公告 (1)

IV. Related Vulnerabilities

Same product: rack
Same vendor: rack
Same weakness: CWE-200

V. Comments for CVE-2025-61780

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