Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is "Off" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header, a different vulnerability than CAN-2002-1157.
総合評価: CVE-2002-0840 は悪用リスクが高い（81/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 94.01%、100 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）。 直近 1 日で EPSS が +3.82% 上昇。悪用への関心が高まっている可能性があります。 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 |
|---|---|---|---|---|
| 21885 | exploit_db | edb | 2002-10-02 | 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 | 90.18% | 94.01% | +3.82% |
| 2 | 2026-05-07 | 91.10% | 90.18% | -0.92% |
| 3 | 2026-01-23 | — | 91.10% | — |
EPSS の全履歴 （全 20 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 |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2002-0840 not yet assigned priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2002-0840 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2002-0840 |
ubuntu
|
medium | CVE-2002-0840 medium priority: Ubuntu including 2 source packages (apache, apache2), 8 status rows across 4 suites (dapper, edgy, feisty, upstream): released 6, needs-triage 2. | https://ubuntu.com/security/CVE-2002-0840 |
Fixed in Apache HTTP Server 2.0.43 and 1.3.27: http://httpd.apache.org/security/vulnerabilities_20.html http://httpd.apache.org/security/vulnerabilities_13.html
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | 1.3 | cpe:2.3:a:apache:http_server:1.3:*:*:*:*:*:*:* |
| apache | http_server | 1.3.1 | cpe:2.3:a:apache:http_server:1.3.1:*:*:*:*:*:*:* |
| apache | http_server | 1.3.3 | cpe:2.3:a:apache:http_server:1.3.3:*:*:*:*:*:*:* |
| apache | http_server | 1.3.4 | cpe:2.3:a:apache:http_server:1.3.4:*:*:*:*:*:*:* |
| apache | http_server | 1.3.6 | cpe:2.3:a:apache:http_server:1.3.6:*:*:*:*:*:*:* |
| apache | http_server | 1.3.9 | cpe:2.3:a:apache:http_server:1.3.9:*:*:*:*:*:*:* |
| apache | http_server | 1.3.11 | cpe:2.3:a:apache:http_server:1.3.11:*:*:*:*:*:*:* |
| apache | http_server | 1.3.12 | cpe:2.3:a:apache:http_server:1.3.12:*:*:*:*:*:*:* |
| apache | http_server | 1.3.14 | cpe:2.3:a:apache:http_server:1.3.14:*:*:*:*:*:*:* |
| apache | http_server | 1.3.17 | cpe:2.3:a:apache:http_server:1.3.17:*:*:*:*:*:*:* |
| apache | http_server | 1.3.18 | cpe:2.3:a:apache:http_server:1.3.18:*:*:*:*:*:*:* |
| apache | http_server | 1.3.19 | cpe:2.3:a:apache:http_server:1.3.19:*:*:*:*:*:*:* |
| apache | http_server | 1.3.20 | cpe:2.3:a:apache:http_server:1.3.20:*:*:*:*:*:*:* |
| apache | http_server | 1.3.22 | cpe:2.3:a:apache:http_server:1.3.22:*:*:*:*:*:*:* |
| apache | http_server | 1.3.23 | cpe:2.3:a:apache:http_server:1.3.23:*:*:*:*:*:*:* |
| apache | http_server | 1.3.24 | cpe:2.3:a:apache:http_server:1.3.24:*:*:*:*:*:*:* |
| apache | http_server | 1.3.25 | cpe:2.3:a:apache:http_server:1.3.25:*:*:*:*:*:*:* |
| apache | http_server | 1.3.26 | cpe:2.3:a:apache:http_server:1.3.26:*:*:*:*:*:*:* |
| apache | http_server | 2.0 | cpe:2.3:a:apache:http_server:2.0:*:*:*:*:*:*:* |
| apache | http_server | 2.0.28 | cpe:2.3:a:apache:http_server:2.0.28:*:*:*:*:*:*:* |
| apache | http_server | 2.0.32 | cpe:2.3:a:apache:http_server:2.0.32:*:*:*:*:*:*:* |
| apache | http_server | 2.0.35 | cpe:2.3:a:apache:http_server:2.0.35:*:*:*:*:*:*:* |
| apache | http_server | 2.0.36 | cpe:2.3:a:apache:http_server:2.0.36:*:*:*:*:*:*:* |
| apache | http_server | 2.0.37 | cpe:2.3:a:apache:http_server:2.0.37:*:*:*:*:*:*:* |
| apache | http_server | 2.0.38 | cpe:2.3:a:apache:http_server:2.0.38:*:*:*:*:*:*:* |
| apache | http_server | 2.0.39 | cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:* |
| apache | http_server | 2.0.40 | cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:* |
| apache | http_server | 2.0.41 | cpe:2.3:a:apache:http_server:2.0.41:*:*:*:*:*:*:* |
| apache | http_server | 2.0.42 | cpe:2.3:a:apache:http_server:2.0.42:*:*:*:*:*:*:* |
| oracle | application_server | 1.0.2 | cpe:2.3:a:oracle:application_server:1.0.2:*:*:*:*:*:*:* |
| oracle | application_server | 1.0.2.1s | cpe:2.3:a:oracle:application_server:1.0.2.1s:*:*:*:*:*:*:* |
| oracle | application_server | 1.0.2.2 | cpe:2.3:a:oracle:application_server:1.0.2.2:*:*:*:*:*:*:* |
| oracle | application_server | 9.0.2 | cpe:2.3:a:oracle:application_server:9.0.2:*:*:*:*:*:*:* |
| oracle | application_server | 9.0.2 | cpe:2.3:a:oracle:application_server:9.0.2:r2:*:*:*:*:*:* |
| oracle | application_server | 9.0.2.1 | cpe:2.3:a:oracle:application_server:9.0.2.1:*:*:*:*:*:*:* |
| oracle | database_server | 8.1.7 | cpe:2.3:a:oracle:database_server:8.1.7:*:*:*:*:*:*:* |
| oracle | database_server | 9.2.1 | cpe:2.3:a:oracle:database_server:9.2.1:*:*:*:*:*:*:* |
| oracle | database_server | 9.2.2 | cpe:2.3:a:oracle:database_server:9.2.2:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7 | cpe:2.3:a:oracle:oracle8i:8.1.7:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7.1 | cpe:2.3:a:oracle:oracle8i:8.1.7.1:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7_.0.0_enterprise | cpe:2.3:a:oracle:oracle8i:8.1.7_.0.0_enterprise:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7_.1.0_enterprise | cpe:2.3:a:oracle:oracle8i:8.1.7_.1.0_enterprise:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0 | cpe:2.3:a:oracle:oracle9i:9.0:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0.1 | cpe:2.3:a:oracle:oracle9i:9.0.1:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0.1.2 | cpe:2.3:a:oracle:oracle9i:9.0.1.2:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0.1.3 | cpe:2.3:a:oracle:oracle9i:9.0.1.3:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0.2 | cpe:2.3:a:oracle:oracle9i:9.0.2:*:*:*:*:*:*:* |