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

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-77394 · CVE overview and exploitation status

EUVD-2026-85564

GHSA-gvf2-2rh5-mpgf

cve-program · CVE-2026-77394

• https://github.com/OpenC3/cosmos/security/advisories/GHSA-gvf2-2rh5-mpgf
• https://github.com/OpenC3/cosmos/pull/3560
• https://github.com/OpenC3/cosmos/commit/10371f8f410b9ad588f98dfa3befaaacb6587cd3
• https://github.com/OpenC3/cosmos/releases/tag/v7.3.0

euvd · EUVD-2026-85564

• https://github.com/OpenC3/cosmos/security/advisories/GHSA-gvf2-2rh5-mpgf
• https://github.com/OpenC3/cosmos/pull/3560
• https://github.com/OpenC3/cosmos/commit/10371f8f410b9ad588f98dfa3befaaacb6587cd3
• https://github.com/OpenC3/cosmos/releases/tag/v7.3.0

nvd · CVE-2026-77394

• https://github.com/OpenC3/cosmos/commit/10371f8f410b9ad588f98dfa3befaaacb6587cd3
• https://github.com/OpenC3/cosmos/pull/3560
• https://github.com/OpenC3/cosmos/releases/tag/v7.3.0
• https://github.com/OpenC3/cosmos/security/advisories/GHSA-gvf2-2rh5-mpgf

osv · GHSA-gvf2-2rh5-mpgf

• https://github.com/OpenC3/cosmos/security/advisories/GHSA-gvf2-2rh5-mpgf
• https://github.com/OpenC3/cosmos/pull/3560
• https://github.com/OpenC3/cosmos/commit/10371f8f410b9ad588f98dfa3befaaacb6587cd3
• https://github.com/OpenC3/cosmos
• https://github.com/OpenC3/cosmos/releases/tag/v7.3.0

No related changes are available here.