Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib. Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.
総合評価: CVE-2026-4176 は低リスク(39.5/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 0.01%、1 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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。
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 | 2026-03-30 | — | 0.01% | — |
EPSS の全履歴 (全 1 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 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-4176: 1 source package rows (perl); 1 state rows across 1 repos (edge-main); fixed 1, open 0. | https://security.alpinelinux.org/vuln/CVE-2026-4176 |
debian
|
not yet assigned | CVE-2026-4176 not yet assigned priority: Debian including 1 source packages (perl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-4176 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-4176 |
ubuntu
|
medium | CVE-2026-4176 medium priority: Ubuntu including 1 source packages (perl), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needs-triage 4, not-affected 3, released 1. | https://ubuntu.com/security/CVE-2026-4176 |
| URL | タグ |
|---|---|
| https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94 | Patch |
| https://lists.security.metacpan.org/cve-announce/msg/37638919/ | Third Party Advisory |
| https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes | Release Notes |
| https://metacpan.org/release/SHAY/perl-5.40.4/changes | Release Notes |
| https://metacpan.org/release/SHAY/perl-5.42.2/changes | Release Notes |
| https://www.cve.org/CVERecord?id=CVE-2026-3381 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/03/30/2 | Mailing List Third Party Advisory |