{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78191", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-08-23T18:38:50.604Z", "datePublished": "2026-10-31T14:34:30.167Z", "dateUpdated": "2026-11-06T14:37:02.412Z"}, "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": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-10-31T14:34:30.167Z"}, "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"}}, "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": "2026-11-06T14:36:36.075558Z", "id": "CVE-2026-78191", "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": "2026-11-06T14:37:02.412Z"}}]}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "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."}], "id": "CVE-2026-78191", "lastModified": "2026-11-06T15:17:23.297", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-78191", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T14:36:36.075558Z", "version": "2.0.3"}}]}, "published": "2026-10-31T15:16:54.247", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/ASPEER/WebDyne-3.022/changes"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-777"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.031,3.022)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "webdyne", "vendor": "perl"}], "created": "2026-11-03T16:31:37.221453+00:00", "updated": "2026-11-06T17:15:06.676261+00:00", "vendors": ["perl", "perl$PRODUCT$webdyne"]}