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CVE-2026-55590
Open Redirect in cakephp/authentication (CVE-2026-55590)
Summary
vulnerability in cakephp/authentication (CVE-2026-55590). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `3.3.6` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-55590** has been found in cakephp/authentication.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade cakephp/authentication to **3.3.6** or later.
If unsure, ask your IT team or search "cakephp/authentication CVE-2026-55590" on the vendor's site.
CVE-2026-55590 (cakephp/authentication) — CWE-601 /
Patched: `3.3.6` — apply immediately
Workaround: If you are unable to upgrade, you should consider adding application validation to the redirect query string parameter to mitigate this vulnerability.
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-601) exists in cakephp/authentication.
📍 Affected scope
cakephp/authentication — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **3.3.6**.
🛡️ Workaround
Workaround: If you are unable to upgrade, you should consider adding application validation to the redirect query string parameter to mitigate this vulnerability.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'cakephp/authentication' .` 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
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1Identify exposure identify
grep -r 'cakephp/authentication' . | 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 `cakephp/authentication` を grep し、稼働しているサービス・バージョンを把握する。
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5Apply temporary workaround mitigate
If you are unable to upgrade, you should consider adding application validation to the redirect query string parameter to mitigate this vulnerability.パッチが適用されるまでの応急処置として、If you are unable to upgrade, you should consider adding application validation to the redirect query string parameter to mitigate this vulnerability. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade cakephp/authentication to 3.3.6ステージング環境で 3.3.6 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。
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7Post-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
composer
cakephp/authentication
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.1"}]}]