Amidaware
CVE-2026-121578: Tactical RMM contains a stored XSS vulnerability caused by improperly validated input or encode output for various fields, enabling HTML/JavaScript to be stored
CVE-2026-121578 Nov 3, 2026 Source: Vendor
Tactical RMM contains a stored XSS vulnerability caused by improperly validated input or encode output for various fields, enabling HTML/JavaScript to be stored in the tools database, which is then executed in the browsers of users when they view content containing the infected objects, leading to account takeover or code execution.
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-121578
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