Vulnerability in php8.1 (USN-8336-1)

Summary

vulnerability in php8.1 (USN-8336-1). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `8.1.2-1ubuntu2.24` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **USN-8336-1** has been found in php8.1. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade php8.1 to **8.1.2-1ubuntu2.24** or later. If unsure, ask your IT team or search "php8.1 USN-8336-1" on the vendor's site.

USN-8336-1 (php8.1) — Patched: `8.1.2-1ubuntu2.24` — apply immediately 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** (unclassified) exists in php8.1.

📍 Affected scope

php8.1 — .

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure

🔧 How to fix

Update to **8.1.2-1ubuntu2.24**.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'php8.1' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response Actions (7 steps)

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

1
Identify exposure identify
```
grep -r 'php8.1' . | 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 `php8.1` を grep し、稼働しているサービス・バージョンを把握する。
6
Apply patch patch
```
Upgrade php8.1 to 8.1.2-1ubuntu2.24
```
ステージング環境で 8.1.2-1ubuntu2.24 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
7
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 Step 3 と同じログクエリでアラート再発が無いか継続監視。

Affected packages

Ubuntu:22.04:LTS php8.1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1.2-1ubuntu2.24"}]}]

Ubuntu:24.04:LTS php8.3

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.3.6-0ubuntu0.24.04.9"}]}]

Ubuntu:25.10 php8.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.4.11-1ubuntu1.2"}]}]

Ubuntu:26.04:LTS php8.5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.4-0ubuntu1.1"}]}]

References

advisory https://ubuntu.com/security/notices/USN-8336-1
report https://ubuntu.com/security/CVE-2025-14179
report https://ubuntu.com/security/CVE-2026-6104
report https://ubuntu.com/security/CVE-2026-6722
report https://ubuntu.com/security/CVE-2026-6735
report https://ubuntu.com/security/CVE-2026-7259
report https://ubuntu.com/security/CVE-2026-7261
report https://ubuntu.com/security/CVE-2026-7262
report https://ubuntu.com/security/CVE-2026-7263
report https://ubuntu.com/security/CVE-2026-7568