CVE-2026-79748
Authenticated non-admin can execute arbitrary OS commands via MCPHub server config.
Is CVE-2026-79748 being exploited?
Not confirmed. CVE-2026-79748 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-79748?
CVE-2026-79748 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-79748?
Yes. A fix has been recorded for CVE-2026-79748. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-79748 affect?
CVE-2026-79748 affects MCPHub < 0.12.15, Published MCPHub Docker image, npx/systemd MCPHub deployments. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-79748?
Upgrade to v0.12.15; restrict access, run MCPHub non-root, audit configs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated non-admin can spawn arbitrary OS processes (e.g., /bin/sh) executed as the MCPHub OS user (commonly root), enabling full host compromise.
Immediate action required
- affected< 0.12.15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.