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vuln-cve/data/2026/72xxx/CVE-2026-72688.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-72688",
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"state": "PUBLISHED",
"assignerShortName": "TuranSec",
"dateReserved": "2026-08-10T11:55:39.470Z",
"datePublished": "2026-08-10T11:59:02.770Z",
"dateUpdated": "2026-08-10T18:22:30.882Z"
},
"containers": {
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"shortName": "TuranSec",
"dateUpdated": "2026-08-10T11:59:02.770Z"
},
"title": "OpenSignLabs opensignserver - Missing Authentication for Critical Function",
"descriptions": [
{
"lang": "en",
"value": "A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.</p>"
}
]
}
],
"affected": [
{
"vendor": "OpenSignLabs",
"product": "opensignserver",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"status": "affected",
"lessThanOrEqual": "2.37.0",
"versionType": "semver"
}
]
}
],
"references": [
{
"url": "https://github.com/OpenSignLabs/OpenSign",
"name": "OpenSign GitHub Repository",
"tags": [
"third-party-advisory"
]
}
],
"credits": [
{
"lang": "en",
"value": "Bobur Abdugafforov (Mahadsec)",
"type": "finder"
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-306",
"description": "CWE-306: Missing Authentication for Critical Function"
}
]
}
],
"source": {
"discovery": "EXTERNAL"
},
"datePublic": "2026-08-10T12:00:00.000Z"
},
"adp": [
{
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{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-10T15:51:43.356909Z",
"id": "CVE-2026-72688",
"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": "2026-08-10T18:22:30.882Z"
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}