NSA GRASSMARLIN Improper Restriction of XML External Entity Reference
Priority LOW 24CWE-611Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NationalSecurityAgency | GRASSMARLIN | All versions | — | No fix listed | CNA |
- GRASSMARLIN VendorNationalSecurityAgency Affected All versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-6807
- 2026-10-03 Alias added: GHSA-w2pw-52qg-478g
References
More NationalSecurityAgency vulnerabilities
- TI-2026-39515 NationalSecurityAgency/skills-service has Stored XSS via User Registration Enabling Admin Account Takeover CVSS 3.1CRITICAL 9.6
- TI-2023-08846 Ghidra/RuntimeScripts/Linux/support/launch.sh in NSA Ghidra through 10.2.2 passes… CVSS 3.1CRITICAL 9.8
- TI-2026-37876 Ghidra < 12.1 - SQL Injection via Unescaped Filter Values in BSim Search CVSS 4.0HIGH 8.7
- TI-2026-27685 Emissary has an OS Command Injection via Unvalidated IN_FILE_ENDING / OUT_FILE_ENDING in Executrix CVSS 3.1HIGH 8.8
- TI-2026-04310 NSA Ghidra Auto-Analysis Annotation Command Execution CVSS 3.1HIGH 8.8
- TI-2026-37873 Ghidra < 12.0.4 - Path Traversal via Zip Slip in Theme Import CVSS 4.0HIGH 8.4
Sources
- CVE-2026-6807 · CVE Program
- CVE-2026-6807 · NVD
- FIRST EPSS
- GHSA-w2pw-52qg-478g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences