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MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-100240
StatePUBLISHED
Assignerwikimedia-foundation
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-29 17:17:01 UTC
Updated2026-10-01 19:17:16 UTC
DescriptionMissing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.002980000 probability, percentile 0.204100000 (date 2026-10-04)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wikimedia Foundation Mediawiki - TemplateSandbox Extension affected * 1.46.1, 1.45.5, 1.43.10 semver Not specified

References

ReferenceSourceLinkTags
gerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc gerrit.wikimedia.org
phabricator.wikimedia.org/T407974 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc phabricator.wikimedia.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Leo768 (en)

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