Paper/Archive/CVE-2026-100240

CVE-2026-100240

Wikimedia Foundation Mediawiki - TemplateSandbox Extension — TemplateSandbox does not check read permissions for the page being previewed

EPSS 0.3%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 22.4.225 × 204.5 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE 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.

Affected

ProductAffectedFixed inSource

Mediawiki - TemplateSandbox Extension< 1.46.1, 1.45.5, 1.43.101.46.1, 1.45.5, 1.43.10CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refphabricator.wikimedia.org/T407974 refgerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7