UBUNTU-CVE-2026-102990 (CVE-2026-102990)
Vulnerability from osv_ubuntu – Published: 2026-10-02 00:00 – Updated: 2026-10-02 00:00 – Source website
VLAI
Details
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.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-agent-base",
"binary_version": "7.1.0~0~2023071921-5"
},
{
"binary_name": "node-args",
"binary_version": "5.0.3~0~2023071921-5"
},
{
"binary_name": "node-basic-ftp",
"binary_version": "5.0.3~0~2023071921-5"
},
{
"binary_name": "node-data-uri-to-buffer",
"binary_version": "5.0.1~0~2023071921-5"
},
{
"binary_name": "node-degenerator",
"binary_version": "5.0.1~0~2023071921-5"
},
{
"binary_name": "node-get-uri",
"binary_version": "6.0.1~0~2023071921-5"
},
{
"binary_name": "node-http-proxy-agent",
"binary_version": "7.0.0~0~2023071921-5"
},
{
"binary_name": "node-https-proxy-agent",
"binary_version": "7.0.1~0~2023071921-5"
},
{
"binary_name": "node-pac-proxy-agent",
"binary_version": "7.0.0~0~2023071921-5"
},
{
"binary_name": "node-pac-resolver",
"binary_version": "7.0.0~0~2023071921-5"
},
{
"binary_name": "node-proxy",
"binary_version": "2.1.1~0~2023071921-5"
},
{
"binary_name": "node-proxy-agent",
"binary_version": "6.3.0~0~2023071921-5"
},
{
"binary_name": "node-socks-proxy-agent",
"binary_version": "8.0.1~0~2023071921-5"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "node-proxy-agents",
"purl": "pkg:deb/ubuntu/node-proxy-agents@0~2023071921-5?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0~2023071921-5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-agent-base",
"binary_version": "7.1.4~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-args",
"binary_version": "5.0.3~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-basic-ftp",
"binary_version": "5.2.0~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-data-uri-to-buffer",
"binary_version": "6.0.2~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-degenerator",
"binary_version": "5.0.1~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-get-uri",
"binary_version": "6.0.5~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-http-proxy-agent",
"binary_version": "7.0.2~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-https-proxy-agent",
"binary_version": "7.0.6~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-pac-proxy-agent",
"binary_version": "7.2.0~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-pac-resolver",
"binary_version": "7.0.1~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-proxy",
"binary_version": "2.2.0~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-proxy-agent",
"binary_version": "6.5.0~0~2025070717+~cs15.2.7-1build1"
},
{
"binary_name": "node-socks-proxy-agent",
"binary_version": "8.0.5~0~2025070717+~cs15.2.7-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "node-proxy-agents",
"purl": "pkg:deb/ubuntu/node-proxy-agents@0~2025070717+~cs15.2.7-1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0~2025070717-2",
"0~2025070717-6",
"0~2025070717+~cs15.2.7-1build1"
]
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2026-102990",
"modified": "2026-10-02T00:00:00Z",
"published": "2026-10-02T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-102990"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-102990"
},
{
"type": "REPORT",
"url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r"
},
{
"type": "REPORT",
"url": "https://github.com/patrickjuchli/basic-ftp/commit/d0d9e07c56e519587bb50532ac6eadbb0cb0cfe9"
},
{
"type": "REPORT",
"url": "https://github.com/patrickjuchli/basic-ftp/releases/tag/v6.2.1"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "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",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-102990"
]
}
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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