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CVE-2024-49767
Vulnerability in Quart (CVE-2024-49767)
Summary
vulnerability in Quart (CVE-2024-49767). Risk of unauthorized operations or information disclosure. Exploitable via ``Request.max_form_memory_size``. Mitigation: upgrade to `0.20.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2024-49767** has been found in Quart.
Attackers can target a specific entry point like ``Request.max_form_memory_size`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade Quart to **0.20.0** or later.
If unsure, ask your IT team or search "Quart CVE-2024-49767" on the vendor's site.
CVE-2024-49767 (Quart) — CWE-400 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `Request.max_form_memory_size` / `Request.max_content_length`
Patched: `0.20.0` — 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-400) exists in Quart. Attackers reach the vulnerable code path via ``Request.max_form_memory_size`` without authentication.
📍 Affected scope
Quart — . Attack surface: `Request.max_form_memory_size` / `Request.max_content_length`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.20.0**.
🛡️ 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 'Quart' .` 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 'Quart' . | 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 `Quart` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade Quart to 0.20.0ステージング環境で 0.20.0 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
pip
Quart
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20.0"}]}]
pip
Werkzeug
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6"}]}]
PyPI
werkzeug
[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0rc1"},{"fixed":"3.0.6"}]}]
PyPI
quart
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20.0"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2024-49767
- package https://github.com/pallets/werkzeug
- web https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2
- web https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee
- web https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b
- web https://github.com/pallets/werkzeug/releases/tag/3.0.6
- web https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f
- web https://security.netapp.com/advisory/ntap-20250103-0007
- web https://github.com/pallets/werkzeug/commit/cbb446fdcada7685fce936ded01b76c08dbd6eb5
- web https://github.com/advisories/GHSA-q34m-jh98-gwm2