GHSA-8xvp-7hj6-mcj9 · 深刻度： high · エコシステム： go — GitHub CLI has an incorrect authorization header in API requests to TUF repository mirrors via `gh attestation`, `gh release verify`, and `gh release verify-asset` commands
GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.93.0, GitHub CLI incorrectly includes authorization header in API requests to TUF repository mirrors via gh attestation, gh release verify, and gh release verify-asset commands. The CLI uses a shared HTTP client with an authentication layer that automatically attaches tokens to outgoing requests. This layer lacks accurate host detection and can incorrectly attribute the target host, providing it with a token it should never receive. Specifically, the host normalization logic collapses any *.github.com subdomain to github.com, so a request to tuf-repo.github.com (a GitHub Pages site, not a GitHub API endpoint) is treated as a request to github.com and receives the user's github.com token. For hosts that don't match github.com or a known GHES instance at all, the resolver falls back to GH_ENTERPRISE_TOKEN if set. The gh attestation, gh release verify and gh release verify-asset commands fetch data from several external hosts as part of their normal operation (TUF metadata from tuf-repo.github.com and tuf-repo-cdn.sigstore.dev, artifact bundles from Azure Blob Storage). Because these requests go through the same authenticated HTTP client, the token is sent to all of them. This vulnerability is fixed in 2.93.0.
総合評価: CVE-2026-48501 は低リスク（36.1/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.27%、18 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.27% | +0.22% |
| 2 | 2026-06-04 | 0.04% | 0.05% | +0.01% |
| 3 | 2026-05-30 | — | 0.04% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.4 | 3.1 | HIGH |
|
2.2 | 5.2 | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
GHSA-8xvp-7hj6-mcj9 · 深刻度： high · エコシステム： go — GitHub CLI has an incorrect authorization header in API requests to TUF repository mirrors via `gh attestation`, `gh release verify`, and `gh release verify-asset` commands
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-48501 not yet assigned priority: Debian including 2 source packages (golang-github-cli-go-gh, golang-github-cli-go-gh-v2), 7 status rows across 4 suites (bookworm, forky, sid, trixie): open 7. | https://security-tracker.debian.org/tracker/CVE-2026-48501 |
ubuntu
|
medium | CVE-2026-48501 medium priority: Ubuntu including 2 source packages (golang-github-cli-go-gh, golang-github-cli-go-gh-v2), 10 status rows across 5 suites (jammy, noble, questing, resolute, upstream): needs-triage 8, DNE 2. | https://ubuntu.com/security/CVE-2026-48501 |
| URL | タグ |
|---|---|
| https://github.com/cli/cli/security/advisories/GHSA-8xvp-7hj6-mcj9 | Mitigation Vendor Advisory |