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vuln-cve/data/2026/53xxx/CVE-2026-53724.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53724",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-10T16:43:31.242Z",
"datePublished": "2026-06-12T18:34:38.237Z",
"dateUpdated": "2026-06-12T20:01:13.569Z"
},
"containers": {
"cna": {
"title": "Parse Server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-434",
"lang": "en",
"description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "LOW",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"baseScore": 2.1,
"baseSeverity": "LOW",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/parse-community/parse-server/security/advisories/GHSA-7wqv-xjf3-x35v",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-7wqv-xjf3-x35v"
},
{
"name": "https://github.com/parse-community/parse-server/pull/10489",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/parse-community/parse-server/pull/10489"
},
{
"name": "https://github.com/parse-community/parse-server/pull/10490",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/parse-community/parse-server/pull/10490"
}
],
"affected": [
{
"vendor": "parse-community",
"product": "parse-server",
"versions": [
{
"version": "< 8.6.79",
"status": "affected"
},
{
"version": ">= 9.0.0, < 9.9.1-alpha.4",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-06-12T18:34:38.237Z"
},
"descriptions": [
{
"lang": "en",
"value": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.79 and 9.9.1-alpha.4, the default file upload extension blocklist can be bypassed by appending a trailing dot to a filename whose extension would otherwise be blocked (e.g. poc.svg.). The trailing dot causes the extension parser to extract an empty string, which short-circuits the blocklist check, and the attacker-controlled Content-Type is forwarded to the storage adapter unchanged. Storage adapters that persist and serve the provided Content-Type (such as S3 or GCS) then serve the file with an active type such as image/svg+xml, enabling stored XSS when a victim opens the file URL. The default GridFS adapter is not affected because it sets X-Content-Type-Options: nosniff on responses. This issue has been patched in versions 8.6.79 and 9.9.1-alpha.4."
}
],
"source": {
"advisory": "GHSA-7wqv-xjf3-x35v",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-12T19:03:39.906463Z",
"id": "CVE-2026-53724",
"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": "2026-06-12T20:01:13.569Z"
}
}
]
}
}