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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.

在 0.47.1 版本及之前版本的 Atlantis 中， 端点未进行身份验证，这使得未经身份验证的攻击者能够访问 GitHub App 的凭据。攻击者可以在设置过程中观察或拦截 GitHub 的重定向请求，从而获取 RSA 私钥和 webhook 密钥，进而能够铸造安装令牌（installation token）并伪造 webhook 载荷（payload）。

CVSS 8.0 · High

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

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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