What is CVE-2025-53371?

CVE-2025-53371 is a critical-severity vulnerability in Miraheze Discordnotifications, classified under Uncontrolled Resource Consumption. CVSS score: 9.1/10. Published 2025-07-10.

How severe is CVE-2025-53371?

Critical severity. CVSS v3 base score is 9.1 out of 10.

SSRF in Miraheze Discordnotifications

CVE-2025-53371

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.003 (23.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H.

Affected products

Miraheze Discordnotifications — versions < 1f20d850cbcce5b15951c7c6127b87b927a5415e

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-53371?: CVE-2025-53371 is a critical-severity vulnerability in Miraheze Discordnotifications, classified under Uncontrolled Resource Consumption. CVSS score: 9.1/10. Published 2025-07-10.
How severe is CVE-2025-53371?: Critical severity. CVSS v3 base score is 9.1 out of 10.