CVE-2022-39304: ghinstallation provides transport, which implements http.RoundTripper to provide authentication as an installa

Q: How do I fix CVE-2022-39304?

ghinstallation: upgrade to 2.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-39304 being exploited?

CVE-2022-39304 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-39304 affect?

CVE-2022-39304 affects ghinstallation. Severity is medium (CVSS 5.0). 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

Q: How urgent is CVE-2022-39304?

Priority 31/100. Public exploit reference

Routine

MEDIUM 5.0UPGRADE

CVE-2022-39304 is a medium-severity flaw (CVSS 5.0) affecting ghinstallation. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 av

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-209
Published	2022-12-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: ghinstallation project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-12-20 20:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

ghinstallation project ghinstallation UPGRADE

Affected: < 2.0.0

Fixed in: 2.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ghinstallation || rpm -q ghinstallation || ghinstallation --version

2. UPGRADE to 2.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ghinstallation

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ghinstallation

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-39304?

ghinstallation: upgrade to 2.0.0. Exact commands for each OS are on this page.

Is CVE-2022-39304 being exploited?

CVE-2022-39304 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-39304 affect?

CVE-2022-39304 affects ghinstallation. Severity is medium (CVSS 5.0). 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

How urgent is CVE-2022-39304?

Priority 31/100. Public exploit reference

Software pages

GitHub vulnerabilities

References

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