{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102990", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-29T20:46:08.334Z", "datePublished": "2026-09-30T19:44:47.303Z", "dateUpdated": "2026-09-30T20:05:49.721Z"}, "containers": {"cna": {"title": "basic-ftp: Quadratic-time CPU denial of service in Client.list() Unix directory-listing parser (RE_LINE backtracking)", "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "lang": "en", "description": "CWE-1333: Inefficient Regular Expression Complexity", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r"}, {"name": "https://github.com/patrickjuchli/basic-ftp/commit/d0d9e07c56e519587bb50532ac6eadbb0cb0cfe9", "tags": ["x_refsource_MISC"], "url": "https://github.com/patrickjuchli/basic-ftp/commit/d0d9e07c56e519587bb50532ac6eadbb0cb0cfe9"}, {"name": "https://github.com/patrickjuchli/basic-ftp/releases/tag/v6.2.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/patrickjuchli/basic-ftp/releases/tag/v6.2.1"}], "affected": [{"vendor": "patrickjuchli", "product": "basic-ftp", "versions": [{"version": "< 6.2.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-30T19:44:47.303Z"}, "descriptions": [{"lang": "en", "value": "basic-ftp is an FTP client for Node.js. Prior to 6.2.1, Client.list() can be forced by a malicious or compromised FTP server to spend quadratic CPU time parsing a directory listing because the RE_LINE expression in src/parseListUnix.ts backtracks across adjacent variable-length owner and group fields when a long Unix-style line has a valid prefix but cannot satisfy the later size and date fields. parseList() selects a parser from the last nonblank line and then applies it to every line, so a normal final line can select the Unix parser while an earlier crafted line blocks the Node.js event loop and freezes the process. This issue is fixed in version 6.2.1."}], "source": {"advisory": "GHSA-c475-qrg2-pj4r", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-30T20:05:43.038485Z", "id": "CVE-2026-102990", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-30T20:05:49.721Z"}}]}}

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