Critical severity · published Jul 10, 2025
CVE-2025-53371
DiscordNotifications allows DOS, SSRF, and possible RCE through requests to user-controlled URLs
9.1
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DiscordNotifications · miraheze
< 1f20d850cbcce5b15951c7c6127b87b927a5415e · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53371
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53371
github.com
https://github.com/miraheze/DiscordNotifications/commit/1f20d850cbcce5b15951c7c6127b87b927a5415e
github.com
https://github.com/miraheze/DiscordNotifications/security/advisories/GHSA-gvfx-p3h5-qf65