CVE-2026-63100
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
A missing authorization vulnerability in Maybe through version 0.6.0 allows authenticated low-privilege member-role users to access and modify global hosting settings. The Settings::HostingsController lacks proper access controls, exposing the operator's Synth API key in plaintext and allowing attackers to overwrite it, toggle public registration, and disable email confirmation.
Risk Assessment
An attacker can take over the Maybe instance by changing the operator's API key and registration settings, leading to full system disruption and potential data exposure.
Recommendation
Upgrade Maybe to a version newer than 0.6.0 immediately. Until patched, restrict administrative panel access to trusted users only.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

