{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105294", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-05T00:19:08.246Z", "datePublished": "2026-10-05T00:44:19.284Z", "dateUpdated": "2026-10-05T00:44:19.284Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-05T00:44:19.284Z"}, "datePublic": "2026-08-30T00:00:00.000Z", "title": "Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig", "descriptions": [{"lang": "en", "value": "Legcord 1.1.0 through 1.3.0 contains a configuration injection vulnerability that allows script in the Discord page to write any config key via the window.legcord settings.setConfig bridge. Attackers exploiting a Discord XSS can set additionalArguments to persistently add --proxy-server and --ignore-certificate-errors switches, routing all client traffic through an interception proxy."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "External Control of System or Configuration Setting", "cweId": "CWE-15", "type": "CWE"}]}], "affected": [{"vendor": "Legcord", "product": "Legcord", "defaultStatus": "unaffected", "versions": [{"version": "1.1.0", "lessThanOrEqual": "1.3.0", "status": "affected", "versionType": "semver"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/Legcord/Legcord/issues/1163", "tags": ["issue-tracking"], "name": "GitHub Issue #1163"}, {"url": "https://github.com/Legcord/Legcord", "tags": ["product"]}, {"url": "https://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299", "tags": ["technical-description"]}, {"url": "https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig"}], "credits": [{"lang": "en", "value": "Siyang Wu", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Legcord", "vendor": "Legcord", "versions": [{"lessThanOrEqual": "1.3.0", "status": "affected", "version": "1.1.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Legcord 1.1.0 through 1.3.0 contains a configuration injection vulnerability that allows script in the Discord page to write any config key via the window.legcord settings.setConfig bridge. Attackers exploiting a Discord XSS can set additionalArguments to persistently add --proxy-server and --ignore-certificate-errors switches, routing all client traffic through an interception proxy."}], "id": "CVE-2026-105294", "lastModified": "2026-10-05T01:16:28.923", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-10-05T01:16:28.923", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/Legcord/Legcord"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Legcord/Legcord/issues/1163"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-15"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

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