GHSA-qc6m-pwr3-g72p · 深刻度: critical — An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code...
An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk. NOTE: A third-party states that this vulnerability should be rejected because the proof of concept does not demonstrate arbitrary code execution and fails to complete successfully.
総合評価: CVE-2025-56005 は悪用リスクが高い(86.3/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 16.90%、97 パーセンタイル) 根拠: 公開エクスプロイトが 6 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 ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | 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 | 2026-06-30 | 18.65% | 16.90% | -1.75% |
| 2 | 2026-06-15 | 0.82% | 18.65% | +17.83% |
| 3 | 2026-04-21 | — | 0.82% | — |
EPSS の全履歴 (全 10 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
GHSA-qc6m-pwr3-g72p · 深刻度: critical — An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-56005 unimportant priority: Debian including 1 source packages (ply), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. | https://security-tracker.debian.org/tracker/CVE-2025-56005 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-56005 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2025-56005/ |
ubuntu
|
medium | CVE-2025-56005 medium priority: Ubuntu including 1 source packages (ply), 7 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): ignored 6, needs-triage 1. | https://ubuntu.com/security/CVE-2025-56005 |
| URL | タグ |
|---|---|
| https://github.com/bohmiiidd/Undocumented-RCE-in-PLY | Exploit Third Party Advisory |
| https://github.com/bohmiiidd/Undocumument_RCE_PLY-yacc-CVE-2025-56005 | Exploit Third Party Advisory |
| https://github.com/tom025/ply_exploit_rejection | Exploit Mitigation Third Party Advisory |
| https://github.com/tom025/ply_exploit_rejection/issues/1 | |
| http://www.openwall.com/lists/oss-security/2026/01/23/4 | Exploit Mailing List |
| http://www.openwall.com/lists/oss-security/2026/01/23/5 | Mailing List |
| http://www.openwall.com/lists/oss-security/2026/01/28/5 | Exploit Mailing List |
| http://www.openwall.com/lists/oss-security/2026/01/29/1 | Exploit Mailing List |
| http://www.openwall.com/lists/oss-security/2026/01/29/2 | Mailing List |
| http://www.openwall.com/lists/oss-security/2026/01/30/1 | |
| https://access.redhat.com/security/cve/CVE-2025-56005 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2431308 | |
| https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-56005.json |