CVE-2026-6807

NSA GRASSMARLIN Improper Restriction of XML External Entity Reference

State: Published
Severity: 5.5 Medium
Published: Apr 28, 2026
Updated: Apr 29, 2026
Reserved: Apr 21, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	icscert

Weaknesses

CWE-611

Affected Products

Product	Versions
GRASSMARLINNSA	All versionsAffected

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-118-01
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-118-01.json

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