CVE-2025-53371 CRITICAL

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

Vendor Miraheze
Product DiscordNotifications
Weakness CWE-400
Published July 10, 2025
Last update July 10, 2025
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 10, 2025 CVE published
July 10, 2025 Record updated