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vuln-cve/data/2026/25xxx/CVE-2026-25479.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-25479",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-02-02T16:31:35.821Z",
"datePublished": "2026-02-09T18:48:19.971Z",
"dateUpdated": "2026-02-10T16:01:11.941Z"
},
"containers": {
"cna": {
"title": "Litestar has an AllowedHosts validation bypass due to unescaped regex metacharacters in configured host patterns",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-185",
"lang": "en",
"description": "CWE-185: Incorrect Regular Expression",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4"
},
{
"name": "https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace"
},
{
"name": "https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0"
},
{
"name": "https://github.com/litestar-org/litestar/releases/tag/v2.20.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/litestar-org/litestar/releases/tag/v2.20.0"
}
],
"affected": [
{
"vendor": "litestar-org",
"product": "litestar",
"versions": [
{
"version": "< 2.20.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-02-09T18:48:19.971Z"
},
"descriptions": [
{
"lang": "en",
"value": "Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0."
}
],
"source": {
"advisory": "GHSA-93ph-p7v4-hwh4",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-02-10T15:39:53.590127Z",
"id": "CVE-2026-25479",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"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": "2026-02-10T16:01:11.941Z"
}
}
]
}
}