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vuln-cve/data/2026/78xxx/CVE-2026-78189.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-78189",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-08-23T18:38:50.604Z",
"datePublished": "2026-10-31T14:33:55.211Z",
"dateUpdated": "2026-11-06T14:35:24.873Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"WebDyne"
],
"packageName": "WebDyne",
"packageURL": "pkg:cpan/WebDyne",
"programFiles": [
"lib/WebDyne/PSGI.pm"
],
"programRoutines": [
{
"name": "WebDyne::PSGI::api_filename"
}
],
"repo": "https://github.com/aspeer/WebDyne",
"versions": [
{
"lessThan": "3.022",
"status": "affected",
"version": "3.007",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec",
"dateUpdated": "2026-10-31T14:33:55.211Z"
},
"references": [
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/ASPEER/WebDyne-3.022/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to WebDyne 3.022 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-06T14:34:31.408384Z",
"id": "CVE-2026-78189",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"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": "2026-11-06T14:35:24.873Z"
}
}
]
}
}