CVE-2026-39935

{"id": "CVE-2026-39935", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39935", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-08T14:05:08.221177Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "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/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:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "affectedData": [{"vendor": "The Wikimedia Foundation", "product": "Mediawiki - CampaignEvents Extension", "versions": [{"status": "affected", "version": "1.43"}, {"status": "affected", "version": "1.44"}, {"status": "affected", "version": "1.45"}, {"status": "affected", "version": "0", "lessThan": "1.43", "versionType": "custom"}], "defaultStatus": "affected"}]}], "published": "2026-04-07T23:16:27.380", "references": [{"url": "https://gerrit.wikimedia.org/r/c/1249320", "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}, {"url": "https://phabricator.wikimedia.org/T418254", "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS).\u00a0This issue was remediated only on the `master` branch."}, {"lang": "es", "value": "Neutralizaci\u00f3n incorrecta de la entrada durante la generaci\u00f3n de p\u00e1ginas web ('cross-site scripting') vulnerabilidad en la extensi\u00f3n CampaignEvents de Mediawiki de The Wikimedia Foundation permite Cross-Site Scripting (XSS). Este problema afecta a la extensi\u00f3n CampaignEvents de Mediawiki: 1.43.7, 1.44.4, 1.45.2."}], "lastModified": "2026-07-21T19:10:00.107", "sourceIdentifier": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}