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vuln-cve/data/2026/35xxx/CVE-2026-35208.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-35208",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-01T18:48:58.937Z",
"datePublished": "2026-04-06T20:06:25.821Z",
"dateUpdated": "2026-04-07T15:09:55.304Z"
},
"containers": {
"cna": {
"title": "lichess.org has an Unsanitized Stream Title Injection on /streamer",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-116",
"lang": "en",
"description": "CWE-116: Improper Encoding or Escaping of Output",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/lichess-org/lila/security/advisories/GHSA-v7gh-939r-pfjq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/lichess-org/lila/security/advisories/GHSA-v7gh-939r-pfjq"
},
{
"name": "https://github.com/lichess-org/lila/commit/0d5002696ae705e1888bf77de107c73de57bb1b3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/lichess-org/lila/commit/0d5002696ae705e1888bf77de107c73de57bb1b3"
},
{
"name": "https://vimeo.com/1175908262",
"tags": [
"x_refsource_MISC"
],
"url": "https://vimeo.com/1175908262"
}
],
"affected": [
{
"vendor": "lichess-org",
"product": "lila",
"versions": [
{
"version": "< 0d5002696ae705e1888bf77de107c73de57bb1b3",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-06T20:06:25.821Z"
},
"descriptions": [
{
"lang": "en",
"value": "lichess.org is the forever free, adless and open source chess server. Any approved streamer can inject arbitrary HTML into /streamer and the homepage “Live streams” widget by placing markup in their Twitch/YouTube stream title. CSP is present and blocks inline script execution, but the issue is still a server-side HTML injection sink. To trigger this, a Lichess account only needs to satisfy the normal streamer requirements and get approved. Per Streamer.canApply, that means an account older than 2 days with at least 15 games, or a verified/titled account. After moderator approval, once the streamer goes live, Lichess pulls the platform title and renders it into the UI as-is. No extra privileges are needed beyond a normal approved streamer profile. This vulnerability is fixed with commit 0d5002696ae705e1888bf77de107c73de57bb1b3."
}
],
"source": {
"advisory": "GHSA-v7gh-939r-pfjq",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-07T14:55:58.549189Z",
"id": "CVE-2026-35208",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-04-07T15:09:55.304Z"
}
}
]
}
}