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TemplateSandbox does not check read permissions for the page being previewed

Type: advisorySource: Official CVE List1 source record

Missing 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.

Announced Group revision 1
Original source ↗

CVE-2026-100240

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-100240

Mediawiki - TemplateSandbox Extension

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/TemplateSandbox/+/refs/heads/master",
    "vendor": "Wikimedia Foundation",
    "product": "Mediawiki - TemplateSandbox Extension",
    "versions": [
      {
        "status": "affected",
        "version": "*",
        "lessThan": "1.46.1, 1.45.5, 1.43.10",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-100240

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#7611 · Revision 1
Added to Heist Feed
Publisher date
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