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CVE-2025-65954
medium
CVSS 6.1
Open Redirect in simplesamlphp/simplesamlphp-module-casserver (CVE-2025-65954)
Summary
vulnerability in simplesamlphp/simplesamlphp-module-casserver (CVE-2025-65954). Risk of unauthorized operations or information disclosure. Exploitable via ``url``. Mitigation: upgrade to `6.3.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-65954** has been found in simplesamlphp/simplesamlphp-module-casserver.
Attackers can target a specific entry point like ``url`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: upgrade simplesamlphp/simplesamlphp-module-casserver to **6.3.1** or later.
If unsure, ask your IT team or search "simplesamlphp/simplesamlphp-module-casserver CVE-2025-65954" on the vendor's site.
CVE-2025-65954 (simplesamlphp/simplesamlphp-module-casserver) — CWE-601 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: `url`
Patched: `6.3.1` — 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** (CWE-601) exists in simplesamlphp/simplesamlphp-module-casserver. Attackers reach the vulnerable code path via ``url`` without authentication.
📍 Affected scope
simplesamlphp/simplesamlphp-module-casserver — . Attack surface: `url`.
🔥 Severity
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **6.3.1**.
🛡️ 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 'simplesamlphp/simplesamlphp-module-casserver' .` 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 'simplesamlphp/simplesamlphp-module-casserver' . | 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 `simplesamlphp/simplesamlphp-module-casserver` 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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6Apply patch patch
Upgrade simplesamlphp/simplesamlphp-module-casserver to 6.3.1ステージング環境で 6.3.1 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
simplesamlphp/simplesamlphp-module-casserver
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.1"}]}]
Packagist
simplesamlphp/simplesamlphp-module-casserver
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-65954
- exploit 134c704f-9b21-4f2e-91b3-4a467353bcc0
- package https://github.com/simplesamlphp/simplesamlphp-module-casserver
- patch [email protected]
- patch [email protected]
- web https://github.com/simplesamlphp/simplesamlphp-module-casserver/blob/21418f7efbea8c4f078fd4a7d1b9eacf94dd4941/src/Controller/LogoutController.php#L104
- web https://github.com/advisories/GHSA-cvrm-5hp6-h523