Sign in Sign up
JA · EN · FR
SecPulse
Categories
CVE-2026-41570 high CVSS 7.8

Vulnerability in phpunit/phpunit (CVE-2026-41570)

Summary

Vulnerability in phpunit/phpunit (CVE-2026-41570). Successful exploitation can lead to full system takeover. Exploitable via auto_prepend_file. Mitigation: upgrade to 13.1.6 or later.

Original description

The description as published by the source.

PHPUnit is a testing framework for PHP. In versions 12.5.21 and 13.1.5, PHPUnit forwards PHP INI settings to child processes (used for isolated/PHPT test execution) as -d name=value command-line arguments without neutralizing INI metacharacters. Because PHP's INI parser interprets " as a string delimiter, ; as the start of a comment, and most importantly a newline as a directive separator, a value containing a newline is parsed by the child process as multiple INI directives. An attacker able to influence a single INI value can therefore inject arbitrary additional directives into the child's configuration, including auto_prepend_file, extension, disable_functions, open_basedir, and others. Setting auto_prepend_file to an attacker-controlled path yields remote code execution in the child process. This issue has been patched in versions 12.5.22 and 13.1.6.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-41570 has been found in phpunit/phpunit.
Attackers can target a specific entry point like auto_prepend_file over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: upgrade phpunit/phpunit to 13.1.6 or later.
If unsure, ask your IT team or search "phpunit/phpunit CVE-2026-41570" on the vendor's site.

CVE-2026-41570 (phpunit/phpunit) — CWE-88 / CVSS v3 7.8
Attack vector: local / no user interaction
Attack surface: auto_prepend_file / extension / disable_functions / open_basedir
Patched: 13.1.6 — apply immediately
Workaround: - Audit INI values: Ensure no <ini value="…"> entry in `phpunit.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-88) exists in phpunit/phpunit. Attackers reach the vulnerable code path via auto_prepend_file.

📍 Affected scope

Check the vendor advisory for the affected versions of phpunit/phpunit. Attack surface: auto_prepend_file / extension / disable_functions / open_basedir.

🔥 Severity

Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 13.1.6.

🛡️ Workaround

Workaround: - Audit INI values: Ensure no <ini value="…"> entry in `phpunit.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'phpunit/phpunit' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'phpunit/phpunit' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で phpunit/phpunit を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply temporary workaround mitigate 
    - Audit INI values: Ensure no `<ini value="…">` entry in `phpunit.

    パッチが適用されるまでの応急処置として、- Audit INI values: Ensure no <ini value="…"> entry in `phpunit. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch 
    Upgrade phpunit/phpunit to 13.1.6

    ステージング環境で 13.1.6 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  4. 4
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

composer phpunit/phpunit
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.1.6"}]}]
Packagist phpunit/phpunit
[{"type":"ECOSYSTEM","events":[{"introduced":"13.1.5"},{"fixed":"13.1.6"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

We use cookies for analytics and ad measurement. This setting applies to all Game co., Ltd. sites. Details