CVE-2026-103446

highpriority · track · 10EPSS 0.003 · 26 %ileexploit · PoCDE

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.33% (26th) EPSS

CVSS 7.4 · high

Is it mine?

49 products

Check your exposure

Who says so?

1 sources

cert_bund

EPSS · scored 2026-10-27

Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass. This issue affects MediaWiki WikiLambda extension: 1.46.

cvss

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

7.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v4.07.4highCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Ambersecondary

v4.07.4highCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Ambersecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639US

exploits (1)

Public proof-of-concept and weaponised exploit code.

BomboBombone/CVE-2026-103446Sanitized report summary and local PoC for CVE-2026-103446PoC · poc_in_github

affected products (49)

Products and version ranges known to be affected.

Open Source MediaWiki CentralAuth Extension <1.43all versionscert_bundDE
Open Source MediaWiki CentralAuth Extension <1.45all versionscert_bundDE
Open Source MediaWiki CentralAuth Extension <1.46all versionscert_bundDE
Open Source MediaWiki Collection (Book) Extension <1.43all versionscert_bundDE
Open Source MediaWiki Collection (Book) Extension <1.45all versionscert_bundDE
Open Source MediaWiki Collection (Book) Extension <1.46all versionscert_bundDE
Open Source MediaWiki CommonsMetadata Extension <1.43all versionscert_bundDE
Open Source MediaWiki CommonsMetadata Extension <1.45all versionscert_bundDE
Open Source MediaWiki CommonsMetadata Extension <1.46all versionscert_bundDE
Open Source MediaWiki MediaSearch Extension <1.43all versionscert_bundDE
Open Source MediaWiki MediaSearch Extension <1.45all versionscert_bundDE
Open Source MediaWiki MediaSearch Extension <1.46all versionscert_bundDE
Open Source MediaWiki PageTriage Extension <1.43all versionscert_bundDE
Open Source MediaWiki PageTriage Extension <1.45all versionscert_bundDE
Open Source MediaWiki PageTriage Extension <1.46all versionscert_bundDE
Open Source MediaWiki ReadingLists Extension <1.45all versionscert_bundDE
Open Source MediaWiki ReadingLists Extension <1.46all versionscert_bundDE
Open Source MediaWiki WikiForum Extensionall versionscert_bundDEcpe:/a:mediawiki:mediawiki:wikiforum_extension
Open Source MediaWiki WikiLambda Extension <1.46all versionscert_bundDE
Open Source MediaWiki Wikibase Extension <1.43all versionscert_bundDE

showing 20 of 49

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3693MediaWiki Extensions: Mehrere SchwachstellenDeutsch2026-09-30csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in MediaWiki Extensions ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen sowie Daten zu manipulieren oder offenzulegen.

sources

Which sources assert this record, and when.

cert_bund NVD CVE.org MITRE

published 2026-09-30modified 2026-10-06

references (2) nvd

External citations — patches, advisories, analysis.

scry

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