{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-92812", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-16T19:55:01.700Z", "datePublished": "2026-09-16T20:32:58.261Z", "dateUpdated": "2026-10-28T19:05:52.480Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-28T19:05:52.480Z" }, "title": "Decap CMS < 3.11.0 Path Traversal via Sibling Directory Prefix Matching", "descriptions": [ { "lang": "en", "value": "Decap CMS before 3.11.0 contains a path traversal vulnerability in the local proxy containment guard that uses plain string prefix comparison without path separator validation. Attackers can access sibling directories whose names begin with the repository directory name to read, write, or delete files outside the intended repository root." } ], "datePublic": "2026-09-16T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "cweId": "CWE-22", "type": "CWE" } ] } ], "affected": [ { "vendor": "decaporg", "product": "decap-cms", "defaultStatus": "unaffected", "versions": [ { "status": "affected", "version": "0", "versionType": "semver", "lessThan": "3.11.0" } ], "repo": "https://github.com/decaporg/decap-cms", "packageURL": "pkg:github/decaporg/decap-cms" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "references": [ { "url": "https://github.com/decaporg/decap-cms/security/advisories/GHSA-5rrq-v82w-qpfr", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-5rrq-v82w-qpfr)" }, { "url": "https://github.com/geo-chen/oss/blob/main/decap-cms.md", "tags": [ "exploit", "technical-description" ], "name": "Researcher Disclosure" }, { "url": "https://github.com/decaporg/decap-cms/releases?page=2#release-decap-cms@3.11.0", "name": "Fixed Release Tag", "tags": [ "release-notes", "patch" ] }, { "url": "https://www.vulncheck.com/advisories/decap-cms-path-traversal-via-sibling-directory-prefix-matching", "name": "VulnCheck Advisory: decap-server Path Traversal via Sibling Directory Prefix Matching", "tags": [ "third-party-advisory" ] } ], "credits": [ { "lang": "en", "value": "lalalala5678", "type": "finder" }, { "lang": "en", "value": "George Chen", "type": "finder" }, { "lang": "en", "value": "tk-gamefactory", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-19T01:53:24.560519Z", "id": "CVE-2026-92812", "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": "2026-09-19T01:53:35.949Z" } } ] } }