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vuln-cve/data/2026/42xxx/CVE-2026-42844.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-42844",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-30T16:44:48.376Z",
"datePublished": "2026-05-12T21:43:18.259Z",
"dateUpdated": "2026-05-13T14:28:31.866Z"
},
"containers": {
"cna": {
"title": "Grav: Low-privileged API users can create super-admin accounts via blueprint-upload",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-434",
"lang": "en",
"description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-269",
"lang": "en",
"description": "CWE-269: Improper Privilege Management",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h"
}
],
"affected": [
{
"vendor": "getgrav",
"product": "grav",
"versions": [
{
"version": "2.0.0-beta.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-05-12T21:43:18.259Z"
},
"descriptions": [
{
"lang": "en",
"value": "Grav is a file-based Web platform. In Grav 2.0.0-beta.2, a low-privileged authenticated API user with api.media.write can abuse /api/v1/blueprint-upload to write an arbitrary YAML file into user/accounts/, then log in as the newly created account with api.super privileges. This results in full administrative compromise of the Grav API. This vulnerability is fixed in API 1.0.0-beta.17."
}
],
"source": {
"advisory": "GHSA-6xx2-m8wv-756h",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-13T14:28:07.384843Z",
"id": "CVE-2026-42844",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-05-13T14:28:31.866Z"
}
}
]
}
}