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Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers

CVSS 4.0 8.8 HIGHCVSS 3.1 8.0 HIGHCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-82282

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82282

Published

atlantis

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "runatlantis",
                    "product": "atlantis",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "0.47.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 12 Nov 13:19 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current