When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.
総合評価: CVE-2026-3783 は公開エクスプロイトあり(50/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.33%、25 パーセンタイル) 根拠: 公開エクスプロイトが 1 件参照されています(Exploit-DB)。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.02% | 0.33% | +0.32% |
| 2 | 2026-03-11 | — | 0.02% | — |
EPSS の全履歴 (全 2 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 |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-3783: 1 source package rows (curl); 281 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 1, open 280. | https://security.alpinelinux.org/vuln/CVE-2026-3783 |
debian
|
not yet assigned | CVE-2026-3783 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-3783 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-3783 |
suse
|
medium | CVE-2026-3783 severity moderate: SUSE including 308 source package names (1.1.1-1.44:libcurl4-8.14.1-150700.7.14.1, 13.2-9.77:curl-8.14.1-slfo.1.1_6.1, …), 505 product×package rows across 103 product lines (Container private-registry/harbor-trivy-adapter, Container suse/ltss/sle12.5/sles12sp5, … (103 product lines)): Fixed 254, Known Affected 231, Known Not Affected 12, First Fixed 8. | https://www.suse.com/security/cve/CVE-2026-3783/ |
ubuntu
|
medium | CVE-2026-3783 medium priority: Ubuntu including 1 source packages (curl), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): released 5, not-affected 3. | https://ubuntu.com/security/CVE-2026-3783 |
| URL | タグ |
|---|---|
| https://curl.se/docs/CVE-2026-3783.html | Patch Vendor Advisory |
| https://curl.se/docs/CVE-2026-3783.json | Vendor Advisory |
| https://hackerone.com/reports/3583983 | Exploit Issue Tracking Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/03/11/2 | Mailing List Third Party Advisory |