Presenton 0.8.8-beta LLM API missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k1.34-

Summaryinfo

A vulnerability was found in Presenton 0.8.8-beta and classified as critical. The affected element is an unknown function of the component LLM API. The manipulation results in missing authentication. This vulnerability is cataloged as CVE-2026-58446. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Presenton 0.8.8-beta. It has been classified as critical. Affected is an unknown code of the component LLM API. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on integrity, and availability. CVE summarizes:

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).

The weakness was shared by George Chen as 678. The advisory is available at github.com. This vulnerability is traded as CVE-2026-58446 since 06/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 0.8.8-beta eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a1103dcef3c761cc8bab44e2862c81a49969abd7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Presenton 0.8.8-beta
Patch: a1103dcef3c761cc8bab44e2862c81a49969abd7

Timelineinfo

06/30/2026 CVE reserved
07/01/2026 +1 days Advisory disclosed
07/01/2026 +0 days VulDB entry created
07/01/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 678
Researcher: George Chen
Status: Confirmed

CVE: CVE-2026-58446 (🔒)
GCVE (CVE): GCVE-0-2026-58446
GCVE (VulDB): GCVE-100-375414

Entryinfo

Created: 07/01/2026 10:13
Changes: 07/01/2026 10:13 (80)
Complete: 🔍
Cache ID: 216::103

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