CVE Explorer

CVE-2026-39933

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting (XSS). The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aa417105bcdb7c8b813960b1149101129a68810e5e57e4df8024c7ee7759f631

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"affected","product":"Mediawiki - GlobalWatchlist Extension","vendor":"The Wikimedia Foundation","versions":[{"status":"unaffected","version":"1.43"},{"status":"unaffected","version":"1.44"},{"status":"unaffected","version":"1.45"},{"lessThan":"1.43","status":"affected","version":"0","versionType":"custom"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0019d6396bd0dfcce8eb9db27998010809834d223372e222738418ae569b2afc · sha256:6ad6956969b5201c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LO…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0019d6396bd0dfcce8eb9db27998010809834d223372e222738418ae569b2afc · sha256:6ad6956969b5201c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:0019d6396bd0dfcce8eb9db27998010809834d223372e222738418ae569b2afc · sha256:6ad6956969b5201c… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"url":"https://gerrit.wikimedia.org/r/q/I1fc7b7e1d234b0aaf9f7d782a65da1451577587e"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0019d6396bd0dfcce8eb9db27998010809834d223372e222738418ae569b2afc · sha256:6ad6956969b5201c… · /containers/cna/references/1

{"url":"https://phabricator.wikimedia.org/T418179"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0019d6396bd0dfcce8eb9db27998010809834d223372e222738418ae569b2afc · sha256:6ad6956969b5201c… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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