CVE-2025-53371Network attack vector

SSRF and service interruption via unvalidated webhook URLs

Published Jul 10, 2025 · Updated Jul 10, 2025

SSRF in Miraheze DiscordNotifications before 1f20d850cbcce5b15951c7c6127b87b927a5415e allows remote authenticated users to reach arbitrary URLs. DiscordNotifier's sendCurlRequest and sendHttpRequest methods pass configured webhook URLs directly to cURL or file_get_contents without validating their destinations. The path is exposed where users or local wiki administrators can set these options, enabling internal HTTP POST access and large-file reads that can interrupt service; the vendor reports code execution in some configurations.

CVSS severity9.1
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Miraheze DiscordNotifications before 1f20d850cbcce5b15951c7c6127b87b927a5415e allows remote authenticated users to reach arbitrary URLs. DiscordNotifier's sendCurlRequest and sendHttpRequest methods pass configured webhook URLs directly to cURL or file_get_contents without validating their destinations. The path is exposed where users or local wiki administrators can set these options, enabling internal HTTP POST access and large-file reads that can interrupt service; the vendor reports code execution in some configurations.

The record

CVE
CVE-2025-53371
Published
Jul 10, 2025
Updated
Jul 10, 2025
Vendor
Miraheze
Product
DiscordNotifications
Classifications
CWE-400, CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1f20d850cbcce5b15951c7c6127b87b927a5415e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Miraheze · DiscordNotificationsversion=< 1f20d850cbcce5b15951c7c6127b87b927a5415e

Published CVSS scores

9.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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