CVE-2026-82282: Runatlantis Atlantis

High severity, CVSS 8.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Atlantis through 0.47.1 fails to authenticate the /github-app/setup endpoint, allowing unauthenticated attackers to access GitHub App credentials. Attackers can observe or intercept the GitHub redirect during setup to obtain the RSA private key and webhook secret, enabling installation token minting and webhook payload forgery.

Affected products

• Runatlantis Atlantis: up to and including 0.47.1

Published 2026-08-28. Last modified 2026-09-24.