CVE-2025-53371

criticalpriority · track · 0EPSS 0.004 · 32 %ileDEEU

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (32nd) EPSS

CVSS 9.1 · critical

Is it mine?

17 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Hsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Hsecondary · security-advisories@github.comexploitability 3.1 · impact 5.3

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-918US

affected products (17)

Products and version ranges known to be affected.

Open Source MediaWiki CheckUser Extension <1.39all versionscert_bundDE
Open Source MediaWiki ExternalGuidance Extension <1.39all versionscert_bundDE
Open Source MediaWiki GlobalBlocking Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:globalblocking_extension
Open Source MediaWiki LanguageSelector Extension <1.39all versionscert_bundDE
Open Source MediaWiki LastModified Extension <1.39all versionscert_bundDE
Open Source MediaWiki MultiBoilerplate Extension <1.39all versionscert_bundDE
Open Source MediaWiki PageForms Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:pageforms_extension
Open Source MediaWiki Springboard Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:springboard_extension
Open Source MediaWiki WatchAnalytics Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:watchanalytics_extension
Open Source MediaWiki WikiLambda Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:wikilambda_extension
Open Source MediaWiki WikiLove Extension 1.39all versionscert_bundDEcpe:/a:mediawiki:mediawiki:wikilove_extension_1.39
Open Source MediaWiki≤ CheckUser Extension <1.39cert_bundDE
Open Source MediaWiki≤ ExternalGuidance Extension <1.39cert_bundDE
Open Source MediaWiki≤ LanguageSelector Extension <1.39cert_bundDE
Open Source MediaWiki≤ LastModified Extension <1.39cert_bundDE
Open Source MediaWiki≤ MultiBoilerplate Extension <1.39cert_bundDE
miraheze DiscordNotifications≤ < 1f20d850cbcce5b15951c7c6127b87b927a5415eenisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2341MediaWiki Extensions: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2025-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in MediaWiki ausnutzen, um beliebigen Code oder SQL-Befehle auszuführen, Cross-Site-Scripting-Angriffe durchzuführen und vertrauliche Informationen offenzulegen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2025-07-10modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

scry

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