What is CVE-2026-58446?

CVE-2026-58446 is a medium-severity vulnerability in Presenton, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-06-30.

How severe is CVE-2026-58446?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Presenton

CVE-2026-58446

Presenton before 0.8.8-beta bundles an MCP server that, on server/Docker deployments configured with session authentication (AUTH_USERNAME/AUTH_PASSWORD), is reachable unauthenticated at /mcp because the nginx front-end does not apply the…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Presenton — versions 0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-58446?: CVE-2026-58446 is a medium-severity vulnerability in Presenton, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-06-30.
How severe is CVE-2026-58446?: Medium severity. CVSS v3 base score is 6.5 out of 10.