The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
総合評価: CVE-2021-23336 は悪用リスクが高い（71.6/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 35.96%、98 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 | 2026-06-24 | 37.33% | 35.96% | -1.36% |
| 2 | 2026-06-15 | 0.28% | 37.33% | +37.05% |
| 3 | 2025-12-28 | — | 0.28% | — |
EPSS の全履歴 （全 32 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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
1.6 | 4.2 | [email protected] |
| 5.9 | 3.1 | MEDIUM |
|
1.6 | 4.2 | [email protected] |
| 4.0 | 2.0 | MEDIUM |
|
4.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2021-23336: 2 source package rows (py3-django, python3); 15 state rows across 15 repos (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 15, open 0. | https://security.alpinelinux.org/vuln/CVE-2021-23336 |
debian
|
not yet assigned | CVE-2021-23336 not yet assigned priority: Debian including 4 source packages (pypy3, python-django, python2.7, python3.9), 12 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 12. | https://security-tracker.debian.org/tracker/CVE-2021-23336 |
gentoo
|
normal | CVE-2021-23336: 1 GLSA(s) (202104-04), 1 atom(s) (dev-lang/python); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-23336 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-23336 |
suse
|
medium | CVE-2021-23336 severity moderate: SUSE including 766 source package names (0.1.75:libpython3_6m1_0-3.6.13-3.78.1, 0.1.75:python3-3.6.13-3.78.1, …), 1619 product×package rows across 123 product lines (Container caasp/v4/389-ds, Container caasp/v4/hyperkube, … (123 product lines)): Fixed 1459, Known Affected 135, Known Not Affected 25. | https://www.suse.com/security/cve/CVE-2021-23336/ |
ubuntu
|
low | CVE-2021-23336 low priority: Ubuntu including 8 source packages (python-django, python2.7, …), 104 status rows across 13 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 63, ignored 17, released 17, not-affected 4, needs-triage 3. | https://ubuntu.com/security/CVE-2021-23336 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| python | python | < 3.6.13 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.7.0, < 3.7.10 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.8.0, < 3.8.8 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.9.0, < 3.9.2 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 32 | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| netapp | cloud_backup | — | cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* |
| netapp | inventory_collect_tool | — | cpe:2.3:a:netapp:inventory_collect_tool:-:*:*:*:*:*:*:* |
| netapp | ontap_select_deploy_administration_utility | — | cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* |
| netapp | snapcenter | — | cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* |
| djangoproject | django | >= 2.2, < 2.2.19 | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* |
| djangoproject | django | >= 3.0, < 3.0.13 | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* |
| djangoproject | django | >= 3.1, < 3.1.7 | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* |
| oracle | communications_offline_mediation_controller | 12.0.0.3.0 | cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* |
| oracle | communications_pricing_design_center | 12.0.0.3.0 | cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* |
| oracle | enterprise_manager_ops_center | 12.4.0.0 | cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* |
| oracle | zfs_storage_appliance | 8.8 | cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:* |