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Vulnerabilities CVE-2026-63100

CVE-2026-63100

High
Open
TLP:CLEAR

Maybe 0.6.0 Missing Authorization via HostingsController show/update

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Description

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.

Details

CVSS Score
7.1
EPSS Score
0.21%

11.2th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 17, 2026
Last Modified
Jul 17, 2026
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