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CVE-2026-67426
critical
CVSS 9.3
Vulnerability in flyto-core (CVE-2026-67426)
Summary
vulnerability in flyto-core (CVE-2026-67426). Confidential information can be exposed externally. Exploitable via `POST /run`. Mitigation: upgrade to `2.26.7` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-67426** has been found in flyto-core.
Attackers can target a specific entry point like `POST /run` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 9.3/10.
What to do: upgrade flyto-core to **2.26.7** or later.
If unsure, ask your IT team or search "flyto-core CVE-2026-67426" on the vendor's site.
CVE-2026-67426 (flyto-core) — CWE-306 / CVSS v3 9.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: POST /run / `callback_url` / `target_allowed` / `params.target_url`
Patched: `2.26.7` — 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-306) exists in flyto-core. Attackers reach the vulnerable code path via `POST /run` without authentication.
📍 Affected scope
flyto-core — . Attack surface: POST /run / `callback_url` / `target_allowed` / `params.target_url`.
🔥 Severity
Severity: Critical (CVSS 9.3/10). Confidential information can be exposed externally
🔧 How to fix
Update to **2.26.7**.
🛡️ 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 `POST /run` requests with malformed payloads or SQL meta-characters. Run `grep -r 'flyto-core' .` 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
-
1Identify exposure identify
grep -r 'flyto-core' . | 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 `flyto-core` 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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3Hunt for indicators of compromise detect
grep 'POST /run' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `POST /run` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。
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6Apply patch patch
Upgrade flyto-core to 2.26.7ステージング環境で 2.26.7 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
Replay attack against POST /run on staging to confirm patch closes the vector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
pip
flyto-core
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.26.7"}]}]
References
- web https://github.com/flytohub/flyto-core/commit/0a0a528520ec18f5a21f1ddf858a71cc1edfb6e9
- web https://github.com/flytohub/flyto-core/releases/tag/v2.26.7
- web https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67
- web https://nvd.nist.gov/vuln/detail/CVE-2026-67426
- web https://github.com/advisories/GHSA-jx74-cqjv-2c67
- web https://github.com/pypa/advisory-database/tree/main/vulns/flyto-core/PYSEC-2026-3571.yaml