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CVE-2025-20378— Open Redirect on Web Login endpoint in Splunk Enterprise

Quick assessment

Affected
Splunk Splunk Enterprise
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.

Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Enterprise和Splunk Cloud Platform存在输入验证错误漏洞，该漏洞源于未验证的重定向，可能导致已验证用户访问恶意URL时重定向到外部恶意站点。以下版本受到影响：Splunk Enterprise 10.0.1之前版本、9

CVSS 3.1 · Low EPSS 0.24% · P13
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I. Basic Information for CVE-2025-20378

Vulnerability Information
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Vulnerability Title
Open Redirect on Web Login endpoint in Splunk Enterprise
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Splunk Cloud Platform和Splunk Enterprise 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Enterprise和Splunk Cloud Platform存在输入验证错误漏洞，该漏洞源于未验证的重定向，可能导致已验证用户访问恶意URL时重定向到外部恶意站点。以下版本受到影响：Splunk Enterprise 10.0.1之前版本、9
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
Splunk Splunk Enterprise 10.0 ~ 10.0.1 -
Splunk Splunk Cloud Platform 10.0.2503 ~ 10.0.2503.5 -

II. Public POCs for CVE-2025-20378

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III. Intelligence Information for CVE-2025-20378

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Vendor Advisories for CVE-2025-20378 (1)

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-601

V. Comments for CVE-2025-20378

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