In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
総合評価: CVE-2020-11080 は中リスク（46.8/100）。CVSS 深刻度は低。悪用される可能性が高い（EPSS 5.32%、92 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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 | 2026-06-20 | 5.36% | 5.32% | -0.04% |
| 2 | 2026-06-15 | 1.25% | 5.36% | +4.11% |
| 3 | 2026-05-09 | — | 1.25% | — |
EPSS の全履歴 （全 33 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 |
|---|---|---|---|---|---|---|
| 3.7 | 3.1 | LOW |
|
2.2 | 1.4 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2020-11080: 3 source package rows (nghttp2, nodejs, nodejs-current); 31 state rows across 17 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.17-main, 3.18-community, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, 3.21-community, 3.21-main, 3.22-community, 3.22-main, edge-community, edge-main); fixed 26, open 5. | https://security.alpinelinux.org/vuln/CVE-2020-11080 |
debian
|
not yet assigned | CVE-2020-11080 not yet assigned priority: Debian including 2 source packages (nghttp2, nodejs), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2020-11080 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2020-11080 |
suse
|
high | CVE-2020-11080 severity important: SUSE including 456 source package names (0.21.0.3.2.10:libnghttp2-14-1.40.0-3.5.1, 0.38.1.5.8.40:libnghttp2-14-1.40.0-3.5.1, …), 948 product×package rows across 407 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (407 product lines)): Fixed 798, Known Affected 135, Known Not Affected 15. | https://www.suse.com/security/cve/CVE-2020-11080/ |
ubuntu
|
medium | CVE-2020-11080 medium priority: Ubuntu including 2 source packages (nghttp2, nodejs), 28 status rows across 16 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 17, ignored 5, released 3, needs-triage 2, DNE 1. | https://ubuntu.com/security/CVE-2020-11080 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| nghttp2 | nghttp2 | < 1.41.0 | cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.1 | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
| fedoraproject | fedora | 31 | cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| oracle | banking_extensibility_workbench | 14.3.0 | cpe:2.3:a:oracle:banking_extensibility_workbench:14.3.0:*:*:*:*:*:*:* |
| oracle | banking_extensibility_workbench | 14.4.0 | cpe:2.3:a:oracle:banking_extensibility_workbench:14.4.0:*:*:*:*:*:*:* |
| oracle | blockchain_platform | < 21.1.2 | cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:* |
| oracle | enterprise_communications_broker | 3.1.0 | cpe:2.3:a:oracle:enterprise_communications_broker:3.1.0:*:*:*:*:*:*:* |
| oracle | enterprise_communications_broker | 3.2.0 | cpe:2.3:a:oracle:enterprise_communications_broker:3.2.0:*:*:*:*:*:*:* |
| oracle | graalvm | 19.3.2 | cpe:2.3:a:oracle:graalvm:19.3.2:*:*:*:enterprise:*:*:* |
| oracle | graalvm | 20.1.0 | cpe:2.3:a:oracle:graalvm:20.1.0:*:*:*:enterprise:*:*:* |
| oracle | mysql | >= 7.3.0, <= 7.3.30 | cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* |
| oracle | mysql | >= 7.4.0, <= 7.4.29 | cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* |
| oracle | mysql | >= 7.5.0, <= 7.5.19 | cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* |
| oracle | mysql | >= 7.6.0, <= 7.6.15 | cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* |
| oracle | mysql | >= 8.0.0, <= 8.0.21 | cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* |
| nodejs | node.js | >= 10.0.0, <= 10.12.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |
| nodejs | node.js | >= 10.13.0, < 10.21.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* |
| nodejs | node.js | >= 12.0.0, <= 12.12.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |
| nodejs | node.js | >= 12.13.0, < 12.18.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* |
| nodejs | node.js | >= 14.0.0, <= 14.4.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |