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vuln-cve/data/2026/73xxx/CVE-2026-73423.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-73423",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-08-12T14:32:11.795Z",
"datePublished": "2026-08-12T20:35:32.181Z",
"dateUpdated": "2026-08-13T17:53:25.469Z"
},
"containers": {
"cna": {
"title": "Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-352",
"lang": "en",
"description": "CWE-352: Cross-Site Request Forgery (CSRF)",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "ACTIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/withastro/astro/security/advisories/GHSA-8mv7-9c27-98vc",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/withastro/astro/security/advisories/GHSA-8mv7-9c27-98vc"
},
{
"name": "https://github.com/withastro/astro/pull/17250",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/withastro/astro/pull/17250"
},
{
"name": "https://github.com/withastro/astro/commit/0b30b35f864310bee8485c952d1877e82e2b9b1a",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/withastro/astro/commit/0b30b35f864310bee8485c952d1877e82e2b9b1a"
},
{
"name": "https://github.com/withastro/astro/releases/tag/astro@7.0.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/withastro/astro/releases/tag/astro@7.0.6"
}
],
"affected": [
{
"vendor": "withastro",
"product": "astro",
"versions": [
{
"version": ">= 7.0.0, < 7.0.6",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-08-12T20:35:32.181Z"
},
"descriptions": [
{
"lang": "en",
"value": "Astro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware() primitive, while actions() and pages() can dispatch to user code independently. Mounting actions() before middleware(), as in the examples/advanced-routing example and Cloudflare Hono documentation, allows cross-origin form-encoded action requests to execute before the origin check, and using pages() without middleware() drops the check for on-demand endpoints and pages. The flaw enables blind write-only cross-site request forgery using the victim's cookies against ActionHandler.handle and PagesHandler.handleWithErrorFallback when manifest.checkOrigin is enabled; the attacker can trigger a state-mutating action or endpoint handler but cannot read the cross-origin response. The default non-composable astro() pipeline is not affected. This issue is fixed in version 7.0.6."
}
],
"source": {
"advisory": "GHSA-8mv7-9c27-98vc",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-13T17:49:22.329880Z",
"id": "CVE-2026-73423",
"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": "2026-08-13T17:53:25.469Z"
}
}
]
}
}