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CVE-2026-82282— Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers

Quick assessment

Affected
runatlantis atlantis
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Atlantis是Atlantis社区的一个自托管的 Golang 应用程序，通过 Webhook 监听 Terraform 拉取请求事件。 Atlantis 0.47.1及之前版本存在授权问题漏洞，该漏洞源于未能对/github-app/setup端点进行身份验证，可能导致未经身份验证的攻击者访问GitHub App凭据，并通过观察或拦截GitHub重定向获取RSA私钥和webhook secret，从而实现安装令牌铸造和webhook负载伪造。

CVSS 8.0 · High EPSS 0.44% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
runatlantis atlantis ≤ 0.47.1 affected
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I. Basic Information for CVE-2026-82282

Vulnerability Information
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Vulnerability Title
Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Atlantis 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atlantis是Atlantis社区的一个自托管的 Golang 应用程序，通过 Webhook 监听 Terraform 拉取请求事件。 Atlantis 0.47.1及之前版本存在授权问题漏洞，该漏洞源于未能对/github-app/setup端点进行身份验证，可能导致未经身份验证的攻击者访问GitHub App凭据，并通过观察或拦截GitHub重定向获取RSA私钥和webhook secret，从而实现安装令牌铸造和webhook负载伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
runatlantis atlantis 0 ~ 0.47.1 -

II. Public POCs for CVE-2026-82282

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III. Intelligence Information for CVE-2026-82282

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Patches & Fixes for CVE-2026-82282 (2)

Vendor Advisories for CVE-2026-82282 (1)

Proof of Concept for CVE-2026-82282 (1)

IV. Related Vulnerabilities

Same product: atlantis
Same vendor: runatlantis
Same weakness: CWE-306

V. Comments for CVE-2026-82282

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