CVE-2026-63100

Maybe through 0.6.0 contains a missing authorization vulnerability that allows authenticated low-privilege member-role users to access and modify global hosting settings by exploiting unprotected show and update actions in the Settings::HostingsController, where the before_action ensure_admin filter is applied only to the clear_cache action. Attackers can read the operator's Synth API key rendered in plaintext via a form field value attribute, overwrite it with an attacker-controlled value, toggle public registration settings, and disable email confirmation requirements to disrupt the entire instance.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/geo-chen/oss/blob/main/maybe.md
https://www.vulncheck.com/advisories/maybe-missing-authorization-via-hostingscontroller-show-update

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-17 16:17

Updated : 2026-07-21 03:16

NVD link : CVE-2026-63100

Mitre link : CVE-2026-63100

CVE.ORG link : CVE-2026-63100

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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