Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers
Priority LOW 38CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00439 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| runatlantis | atlantis | up to 0.47.1 | — | No fix listed | CNA |
- atlantis Vendorrunatlantis Affected up to 0.47.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-82282
- 2026-10-03 Alias added: GHSA-r4h6-8wpf-fw98
References
More runatlantis vulnerabilities
- TI-2026-81450 OS command injection in Atlantis via pull request workspace name CVSS 3.1HIGH 8.8
- TI-2026-46224 Atlantis: Path Traversal in Atlantis Workspace Handling Allows Out-of-Bounds Directory Deletion/Creation CVSS 3.1HIGH 8.1
- TI-2025-36203 Atlantis Exposes Service Version Publicly on /status API Endpoint CVSS 4.0MEDIUM 6.9
- TI-2024-34896 Git credentials are exposed in atlantis logs CVSS 4.0HIGH 8.5
- TI-2022-08720 Timing Attack CVSS 3.1HIGH 7.5
Sources
- CVE-2026-82282 · CVE Program
- CVE-2026-82282 · NVD
- FIRST EPSS
- GHSA-r4h6-8wpf-fw98 · GitHub Advisory Database · CC BY 4.0
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