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CVE-2026-46491
high
CVSS 8.6
Path Traversal in simplesamlphp/simplesamlphp-module-casserver (CVE-2026-46491)
Summary
path traversal in simplesamlphp/simplesamlphp-module-casserver (CVE-2026-46491). Data can be tampered with by attackers. Exploitable via ``ticket``. Mitigation: upgrade to `7.0.3` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-46491** has been found in simplesamlphp/simplesamlphp-module-casserver.
Attackers can target a specific entry point like ``ticket`` over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 8.6/10.
What to do: upgrade simplesamlphp/simplesamlphp-module-casserver to **7.0.3** or later.
If unsure, ask your IT team or search "simplesamlphp/simplesamlphp-module-casserver CVE-2026-46491" on the vendor's site.
CVE-2026-46491 (simplesamlphp/simplesamlphp-module-casserver) — CWE-22 / CVSS v3 8.6
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `ticket` / `pgt` / `FileSystemTicketStore` / `casserver`
Patched: `7.0.3` — 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
**Path traversal** (CWE-22) exists in simplesamlphp/simplesamlphp-module-casserver. Attackers reach the vulnerable code path via ``ticket`` without authentication.
📍 Affected scope
simplesamlphp/simplesamlphp-module-casserver — . Attack surface: `ticket` / `pgt` / `FileSystemTicketStore` / `casserver`.
🔥 Severity
Severity: High (CVSS 8.6/10). Data can be tampered with by attackers
🔧 How to fix
Update to **7.0.3**.
🛡️ 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 7.0.3ステージング環境で 7.0.3 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":"7.0.3"}]}]
Packagist
simplesamlphp/simplesamlphp-module-casserver
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.3"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-46491
- package https://github.com/simplesamlphp/simplesamlphp-module-casserver
- web https://github.com/simplesamlphp/simplesamlphp-module-casserver/security/advisories/GHSA-jrrg-99xh-5j2q
- web https://github.com/advisories/GHSA-jrrg-99xh-5j2q
- web https://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/b84f3e4ed57c4d97e0dc73df102e7eff831a681f
- web https://github.com/simplesamlphp/simplesamlphp-module-casserver/releases/tag/v7.0.3