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CVE-2025-46341— Privilege escalation via SSRF when using HTTP auth

Quick assessment

Affected
FreshRSS FreshRSS
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.

FreshRSS是FreshRSS开源的一个免费的、可自行托管的 RSS 聚合器。 FreshRSS 1.26.2之前版本存在代码问题漏洞，该漏洞源于HTTP认证处理不当，可能导致用户冒充。

CVSS 7.1 · High EPSS 0.46% · P38
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I. Basic Information for CVE-2025-46341

Vulnerability Information
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Vulnerability Title
Privilege escalation via SSRF when using HTTP auth
Source: CVE Program / CVE List V5
Vulnerability Description
FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, when the server is using HTTP auth via reverse proxy, it's possible to impersonate any user either via the `Remote-User` header or the `X-WebAuth-User` header by making specially crafted requests via the add feed functionality and obtaining the CSRF token via XPath scraping. The attacker has to know the IP address of the proxied FreshRSS instance and the admin's username, while also having an account on the instance. An attacker can send specially crafted requests in order to gain unauthorized access to internal services. This can also lead to privilege escalation like in the demonstrated scenario, although users that have setup OIDC are not affected by privilege escalation. Version 1.26.2 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/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
FreshRSS 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreshRSS是FreshRSS开源的一个免费的、可自行托管的 RSS 聚合器。 FreshRSS 1.26.2之前版本存在代码问题漏洞，该漏洞源于HTTP认证处理不当，可能导致用户冒充。
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
FreshRSS FreshRSS < 1.26.2 -

II. Public POCs for CVE-2025-46341

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10709 chars
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III. Intelligence Information for CVE-2025-46341

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Same Patch Batch · FreshRSS · 2025-06-04 · 6 CVEs total

CVE-2025-31136 6.7 MEDIUM FreshRSS vulnerable to Cross-site Scripting by <iframe>'ing a vulnerable same-origin page
CVE-2025-32015 6.7 MEDIUM FreshRSS vulnerable to Cross-site Scripting by embedding <script> tag inside <iframe srcdo
CVE-2025-31482 4.3 MEDIUM FreshRSS vulnerable to DoS by malicious feed entry loading logout URL
CVE-2025-46339 4.3 MEDIUM FreshRSS vulnerable to favicon cache poisoning via proxy
CVE-2025-31134 FreshRSS vulnerable to directory enumeration via ext.php

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-46341

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