Claude Code: Out-of-Band Data Exfiltration via Pre-Approved HuggingFace Domain in WebFetch

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-54316 · Microsoft / collected KEV context

EUVD-2026-38538

GHSA-fg94-h982-f3mm

cve-program · CVE-2026-54316

• https://github.com/anthropics/claude-code/security/advisories/GHSA-fg94-h982-f3mm

euvd · EUVD-2026-38538

• https://github.com/anthropics/claude-code/security/advisories/GHSA-fg94-h982-f3mm

nvd · CVE-2026-54316

• https://github.com/anthropics/claude-code/security/advisories/GHSA-fg94-h982-f3mm

osv · GHSA-fg94-h982-f3mm

• https://github.com/anthropics/claude-code/security/advisories/GHSA-fg94-h982-f3mm
• https://nvd.nist.gov/vuln/detail/CVE-2026-54316
• https://github.com/anthropics/claude-code

No related operational record is retained in the current change model.