CVE-2022-23624 is a high-severity (CVSS 8.1) Improper Input Validation vulnerability in frourio-express. A fix is available for frourio-express — see the affected versions and patch details below.
Validation bypass in frourio-express
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2022-23624.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2022-23624 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
frourio-expressnpmDescription
日本語
影響
v0.26.0以前のfrourioを使用している、かつvalidators/を利用している場合、ネストされたバリデータがリクエストのボディーとクエリに対して正しく働かないケースがあります。また、リクエストに対してバリデーションが効かなくなる入力があります。
パッチ
frourioをv0.26.0かそれ以降のバージョンにアップデートをお願いします。frourio を使用したプロジェクトには class-transformer と reflect-metadata の依存への追加も必要となります。
ワークアラウンド
controller側で自分でclass-transformerを使用してチェックする、vaildatorを使わない、など。
さらなる情報
このセキュリティ勧告に関する質問やコメントについては、以下の方法でお問い合わせいただけます。
- frourioにIssueを開く。
English
Impact
Frourio users who uses frourio version prior to v0.26.0 and integration with class-validator through validators/ folder. Validators does not work properly for request bodies and queries in specific situations. Addtionally, some kind of input is not validated. (false positives)
Patches
Please update your frourio to v0.26.0 or later. You also need to install class-transformer and reflect-metadata to your project.
Workarounds
Validate objects from request with class-transformer in controllers by yourself, or prevent using validators.
For more information
If you have any questions or comments about this advisory:
- Open an issue in frourio
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | frourio-express | all versions | 0.26.0npm install frourio-express@0.26.0 |
Affected Products
frourio-expressfrourioDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for frourio-express, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update frourio-express to 0.26.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-23624 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2022-23624 in your dependencies?
Find it across npm, including transitive dependencies.