CVE-2026-50287
Auth bypass in AgenticMail MCP exposes /mcp without auth prior to 0.9.27.
Is CVE-2026-50287 being exploited?
Not confirmed. CVE-2026-50287 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 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-50287?
CVE-2026-50287 is rated High with a CVSS score of 8.7. 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-2026-50287?
Yes. A fix has been recorded for CVE-2026-50287. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What should I do about CVE-2026-50287?
Upgrade to 0.9.27+.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can initialize a session and call tools via /mcp without authentication, enabling unauthorized tool use.
Patch when possible
- affected< 0.9.27
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.