CVE-2026-78191 (GCVE-0-2026-78191)
Vulnerability from cvelistv5
Published
2026-10-31 14:34
Modified
2026-10-31 14:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-777 - Regular Expression without Anchors
Summary
WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pages.
WebDyne decides whether to run a requested file as a page by matching its name against WEBDYNE_PSP_EXT_RE, which has no end anchor.
An application that accepts uploads by checking only the final extension lets a remote attacker upload a file such as report.psp.pdf and run its embedded Perl by requesting it.
References
| URL | Tags | |
|---|---|---|
{
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"WebDyne"
],
"packageName": "WebDyne",
"packageURL": "pkg:cpan/WebDyne",
"programFiles": [
"lib/WebDyne/Constant.pm",
"lib/WebDyne/Request/PAGI.pm",
"lib/WebDyne/Request/PSGI.pm"
],
"repo": "https://github.com/aspeer/WebDyne",
"versions": [
{
"lessThan": "3.022",
"status": "affected",
"version": "2.031",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pages.\n\nWebDyne decides whether to run a requested file as a page by matching its name against WEBDYNE_PSP_EXT_RE, which has no end anchor.\n\nAn application that accepts uploads by checking only the final extension lets a remote attacker upload a file such as report.psp.pdf and run its embedded Perl by requesting it."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-777",
"description": "CWE-777 Regular Expression without Anchors",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-31T14:34:30.167Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"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 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pages",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-78191",
"datePublished": "2026-10-31T14:34:30.167Z",
"dateReserved": "2026-08-23T18:38:50.604Z",
"dateUpdated": "2026-10-31T14:34:30.167Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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