Dashboard / CVE-2026-58446

CVE-2026-58446

MEDIUM
MEDIUM Priority: 0.05 BB Relevance: 73/100
Published: 2026-06-30 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: Low
A: Low

Description

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 auth_request gate to that path and the MCP server auto-mints a valid internal session token for the configured user. A remote unauthenticated attacker can invoke MCP tools such as generate_presentation, performing authenticated application actions, consuming the operators configured LLM API keys, and creating presentations in the operators instance. The Electron desktop build is not affected (MCP disabled).

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
presenton presenton 0 < 0.8.8-beta

References & Advisories (5)

https://github.com/presenton/presenton/issues/678
technical-description exploit issue-tracking

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploitation Probability

0.70%
Raw Score 0.007030
Percentile 53.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00703
2026-11-12
0.00703
2026-11-10
0.00703
2026-11-09
0.00703
2026-11-08
0.00703

Intelligence Sources

mitre ref →

External Links