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CVE-2025-53371— DiscordNotifications allows DOS, SSRF, and possible RCE through requests to user-controlled URLs

Quick assessment

Affected
miraheze DiscordNotifications
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.

DiscordNotifications是Miraheze开源的一个应用程序。 DiscordNotifications存在代码问题漏洞，该漏洞源于通过curl和file_get_contents发送请求到任意URL，可能导致拒绝服务和服务器端请求伪造攻击。

CVSS 9.1 · Critical EPSS 0.34% · P27
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I. Basic Information for CVE-2025-53371

Vulnerability Information
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Vulnerability Title
DiscordNotifications allows DOS, SSRF, and possible RCE through requests to user-controlled URLs
Source: CVE Program / CVE List V5
Vulnerability Description
DiscordNotifications is an extension for MediaWiki that sends notifications of actions in your Wiki to a Discord channel. DiscordNotifications allows sending requests via curl and file_get_contents to arbitrary URLs set via $wgDiscordIncomingWebhookUrl and $wgDiscordAdditionalIncomingWebhookUrls. This allows for DOS by causing the server to read large files. SSRF is also possible if there are internal unprotected APIs that can be accessed using HTTP POST requests, which could also possibly lead to RCE. This vulnerability is fixed in commit 1f20d850cbcce5b15951c7c6127b87b927a5415e.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
DiscordNotifications 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DiscordNotifications是Miraheze开源的一个应用程序。 DiscordNotifications存在代码问题漏洞，该漏洞源于通过curl和file_get_contents发送请求到任意URL，可能导致拒绝服务和服务器端请求伪造攻击。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
miraheze DiscordNotifications < 1f20d850cbcce5b15951c7c6127b87b927a5415e -

II. Public POCs for CVE-2025-53371

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8892 chars
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III. Intelligence Information for CVE-2025-53371

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IV. Related Vulnerabilities

Same vendor: miraheze
Same weakness: CWE-400

V. Comments for CVE-2025-53371

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