CVE-2022-39287
HIGHCVE-2022-39287 is a high-severity (CVSS 8.1) CWE-319 vulnerability in tiny-csrf. O3 Security confirms whether CVE-2022-39287 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Plaintext transmission of CSRF tokens in tiny-csrf
Blast Radius
tiny-csrfReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.
Description
tiny-csrf is a Node.js cross site request forgery (CSRF) protection middleware. In versions prior to 1.1.0 cookies were not encrypted and thus CSRF tokens were transmitted in the clear. This issue has been addressed in commit 8eead6d and the patch with be included in version 1.1.0. Users are advised to upgrade. There are no known workarounds for this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | tiny-csrf | all versions | 1.1.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for tiny-csrf. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update tiny-csrf to 1.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-39287 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.
How O3 protects you
O3 pinpoints whether CVE-2022-39287 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2022-39287. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2022-39287 in your dependencies?
O3 detects CVE-2022-39287 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.