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.
https://www.theregister.com/security/2026/04/29/cisa-flags-data-theft-bug-in-nsa-built-ot-networking-tool/5225947
https://www.theregister.com/2026/04/29/cisa_flags_datatheft_bug_in/
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
Source: Mitre, NVD
Published: 2026-04-28
Updated: 2026-04-28
Base Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.00005