CVE-2026-82282
High
Description
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.
SeverityHigh
CVSS8.0
Exploit probability—
ProductAtlantis
PublishedAug 28, 2026
First seenAug 28, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| runatlantis atlantis | v ≤ 0.47.1 | — |
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