CVE-2026-82282 json
Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers
published 2026-08-28 2 mo ago modified 2026-09-24 45 d ago also EUVD-2026-67813
- cvss
- 8.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N |
| CNA | 3.1 | 8.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N |
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- runatlantis atlantis
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
github.com
/runatlantis/atlantis/issues/6622
issue-tracking
-
github.com
/runatlantis/atlantis
product
-
github.com
/runatlantis/atlantis/blob/12bfa59f44d8f65bfdda132bff61d8f8f29af1d6/server/controllers/github_app_controller.g
technical-description
-
github.com
/runatlantis/atlantis/blob/12bfa59f44d8f65bfdda132bff61d8f8f29af1d6/server/middleware.go
technical-description
-
vulncheck.com
/advisories/atlantis-github-app-setup-endpoint-returns-app-credentials-to-unauthenticated-callers
third-party-advisory
Sources
- CVE List CVE-2026-82282
- NVD CVE-2026-82282
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