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EUVD-2026-230687

2026-10-09T06:55:02.045144+00:00

EUVD-2026-230687

fkie_cve-2022-39304

2026-10-09T06:55:02.045177+00:00

ghinstallation provides transport, which implements http.RoundTripper to provide authentication as an installation for GitHub Apps. In ghinstallation version 1, when the request to refresh an installation token failed, the HTTP request and response would be returned for debugging. The request contained the bearer JWT for the App, and was returned back to clients. This token is short lived (10 minute maximum). This issue has been patched and is available in version 2.0.0.

GHSA-h4q8-96p6-jcgr — ghinstallation returns app JWT in error responses

2026-10-09T06:55:02.045210+00:00

Affected: Go: github.com/bradleyfalzon/ghinstallation

### Impact

In ghinstallation v1, when the request to refresh an installation token failed, the HTTP request and response would be returned for debugging.

https://github.com/bradleyfalzon/ghinstallation/blob/24e56b3fb7669f209134a01eff731d7e2ef72a5c/transport.go#L172-L174

The request contained the bearer JWT for the App, and was returned back to clients. This token is short lived (10 minute maximum).

### Patches

- This has already been patched in d24f14f8be70d94129d76026e8b0f4f9170c8c3e, and is available in releases >= v2.0.0.

### References _Are there any links users can visit to find out more?_

- See https://docs.github.com/en/developers/apps/building-github-apps/authenticating-with-github-apps#authenticating-as-an-installation for the App installation flow.

### For more information If you have any questions or comments about this advisory: * Open an issue in [ghinstallation](https://github.com/bradleyfalzon/ghinstallation)

gsd-2022-39304

2026-10-09T06:55:02.045245+00:00

gsd-2022-39304