CVE-2026-105294 (GCVE-0-2026-105294)
Vulnerability from cvelistv5
Published
2026-10-05 00:44
Modified
2026-10-05 20:28
Severity ?
9.1 (Critical) - 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
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-15 - External Control of System or Configuration Setting
Summary
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.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-105294",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-05T19:18:28.394263Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-05T20:28:31.628Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Legcord",
"vendor": "Legcord",
"versions": [
{
"lessThanOrEqual": "1.3.0",
"status": "affected",
"version": "1.1.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Siyang Wu"
}
],
"datePublic": "2026-08-30T00:00:00.000Z",
"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."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"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"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-15",
"description": "External Control of System or Configuration Setting",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-05T00:44:19.284Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Issue #1163",
"tags": [
"issue-tracking"
],
"url": "https://github.com/Legcord/Legcord/issues/1163"
},
{
"tags": [
"product"
],
"url": "https://github.com/Legcord/Legcord"
},
{
"tags": [
"technical-description"
],
"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"
},
{
"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"
}
],
"title": "Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-105294",
"datePublished": "2026-10-05T00:44:19.284Z",
"dateReserved": "2026-10-05T00:19:08.246Z",
"dateUpdated": "2026-10-05T20:28:31.628Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-105294\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-05T19:18:28.394263Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-05T19:18:29.442Z\"}}], \"cna\": {\"title\": \"Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Siyang Wu\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 9.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\"}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"Legcord\", \"product\": \"Legcord\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.1.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.3.0\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-08-30T00:00:00.000Z\", \"references\": [{\"url\": \"https://github.com/Legcord/Legcord/issues/1163\", \"name\": \"GitHub Issue #1163\", \"tags\": [\"issue-tracking\"]}, {\"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\"]}, {\"url\": \"https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig\", \"name\": \"VulnCheck Advisory: Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"vulncheck-endgame\"}, \"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\", \"type\": \"CWE\", \"cweId\": \"CWE-15\", \"description\": \"External Control of System or Configuration Setting\"}]}], \"providerMetadata\": {\"orgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"shortName\": \"VulnCheck\", \"dateUpdated\": \"2026-10-05T00:44:19.284Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-105294\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-05T20:28:31.628Z\", \"dateReserved\": \"2026-10-05T00:19:08.246Z\", \"assignerOrgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"datePublished\": \"2026-10-05T00:44:19.284Z\", \"assignerShortName\": \"VulnCheck\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…