{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40521", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-04-13T20:29:02.810Z", "datePublished": "2026-06-29T12:30:12.799Z", "dateUpdated": "2026-06-29T12:30:12.799Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-06-29T12:30:12.799Z"}, "title": "FrontAccounting < 2.4.20 Path Traversal RCE via attachment upload", "descriptions": [{"lang": "en", "value": "FrontAccounting before 2.4.20 contains a path traversal vulnerability in the attachment upload handler that allows authenticated attackers to execute arbitrary code by uploading files with traversal sequences in the unique_name parameter. Attackers can supply path traversal sequences ../../../shell.php to write files outside the intended attachments directory into the web root, and by uploading PHP files without extension validation, achieve remote code execution as the web server user."}], "tags": ["x_open-source"], "datePublic": "2026-04-23T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "affected": [{"defaultStatus": "affected", "vendor": "FrontAccounting", "product": "FrontAccounting", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThan": "2.4.20"}, {"status": "unaffected", "version": "701fea6848da4a02fb83d30f07a9c0473d6b7e33", "versionType": "git"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "references": [{"url": "https://jivasecurity.com/writeups/frontaccounting-rce-attachment-upload-cve-2026-40521", "tags": ["technical-description", "exploit"]}, {"url": "https://sourceforge.net/p/frontaccounting/news/2026/04/release-2420/", "tags": ["release-notes"]}, {"url": "https://github.com/FrontAccountingERP/FA/commit/701fea6848da4a02fb83d30f07a9c0473d6b7e33", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/frontaccounting-path-traversal-rce-via-attachment-upload", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "Jiva (JivaSecurity)", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "vulncheck"}}}}

{}

{}

{}

{"created": "2026-06-29T14:45:04.629409+00:00", "updated": "2026-06-29T14:45:04.629414+00:00", "vendors": []}