CVE-2026-6807— NSA GRASSMARLIN Improper Restriction of XML External Entity Reference
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I. Basic Information for CVE-2026-6807
Vulnerability Information
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Vulnerability Title
NSA GRASSMARLIN Improper Restriction of XML External Entity Reference
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in GRASSMARLIN v3.2.1 allows crafted session data to trigger improper handling of XML input, which may result in unintended exposure of sensitive information. The flaw stems from insufficient hardening of the XML parsing process.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: NVD (National Vulnerability Database)
Vulnerability Title
GRASSMARLIN 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GRASSMARLIN是NSA Cybersecurity Directorate开源的一款工业控制系统网络安全态势感知工具。 GRASSMARLIN v3.2.1版本存在代码问题漏洞，该漏洞源于XML解析过程加固不足，可能导致特制的会话数据触发对XML输入的不当处理，造成敏感信息意外泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| NSA | GRASSMARLIN | All versions | - |
II. Public POCs for CVE-2026-6807
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-611
- CVE-2026-41936
Vvveb < 1.0.8.2 XML External Entity Injection via Import - CVE-2026-40682
Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntr - CVE-2026-6501
ILM Informatique jOpenDocument 代码问题漏洞 - CVE-2025-14543
Improper Restriction of XML External Entity Reference vulner - CVE-2024-13971
Arbitrary File Read and Server Side Request Forgery via XML
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