PT-2026-60793 · Maybe Finance · Maybe

George Chen · CVE-2026-63100 · Published 2026-07-17 · Updated 2026-07-17

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-63100

Affected Products

Maybe

References · 3

• 🔥 https://github.com/geo-chen/oss/blob/main/maybe.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-63100 · Security Note
• https://vulncheck.com/advisories/maybe-missing-authorization-via-hostingscontroller-show-update · Note