OpenC3 COSMOS: Stored, cross-user XSS via Telemetry screen BUTTON widget

Date Sep 23, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product npm · @openc3/vue-common

CVE CVE-2026-77394

High-risk advisory CVE-2026-77394

Summary

OpenC3 COSMOS: Stored, cross-user XSS via Telemetry screen BUTTON widget

Why it matters

GitHub has published a reviewed security advisory for @openc3/vue-common. Prioritize it with other application dependency updates.

Operator check

Check whether @openc3/vue-common is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

GitHub Advisory GHSA-gvf2-2rh5-mpgf NVD — CVE-2026-77394 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

Get watched-vendor alerts Subscribe free Back to feed