CVE-2026-58517

mediumpriority · track · 17OT risk · elevatedEPSS 0.003 · 26 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (26th) EPSS

CVSS 4.3 · medium

Is it mine?

10 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.

cvss

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

6.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.7–6.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v4.06.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:Lsecondary · ENISA EU

v4.06.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/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:X/AU:X/R:X/V:X/RE:X/U:Xsecondary

v4.02.7lowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:U/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:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-288US

affected products (10)

Products and version ranges known to be affected.

Open Source MediaWiki WikiLambda Extension <1.43.9all versionscert_bundDE
Open Source MediaWiki WikiLambda Extension <1.44.6all versionscert_bundDE
Open Source MediaWiki WikiLambda Extension <1.45.4all versionscert_bundDE
Open Source MediaWiki≤ WikiLambda Extension <1.43.9cert_bundDE
Open Source MediaWiki≤ WikiLambda Extension <1.44.6cert_bundDE
Open Source MediaWiki≤ WikiLambda Extension <1.45.4cert_bundDE
The Wikimedia Foundation Mediawiki - WikiLambda Extension* → 1.43.9,1.44.6,1.45.4enisa_euvdEU
mediawiki mediawiki1.43.0 → 1.43.9nvdUScpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
mediawiki mediawiki1.44.0 → 1.44.6nvdUScpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
mediawiki mediawiki1.45.0 → 1.45.4nvdUScpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2170MediaWiki und Extensions: Mehrere SchwachstellenDeutsch2026-07-01csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in MediaWiki ausnutzen, um Cross-Site-Scripting-Angriffe durchzuführen, Benutzer auf bösartige Websites umzuleiten, die Authentifizierung zu umgehen oder SQL-Injection-Angriffe durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-07-01modified 2026-10-25

references (7)

External citations — patches, advisories, analysis.

scry

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