CVE-2025-65944
CVE-2025-65944 is a CWE-201 vulnerability in @sentry/node. O3 Security confirms whether CVE-2025-65944 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Sentry-Javascript deals with leaked sensitive headers when `sendDefaultPii` is set to `true`
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
@sentry/nodenpm@sentry/astronpm@sentry/aws-serverlessnpmDescription
Sentry-Javascript is an official Sentry SDKs for JavaScript. From version 10.11.0 to before 10.27.0, when a Node.js application using the Sentry SDK has sendDefaultPii: true it is possible to inadvertently send certain sensitive HTTP headers, including the Cookie header, to Sentry. Those headers would be stored within a Sentry organization as part of the associated trace. A person with access to the Sentry organization could then view and use these sensitive values to impersonate or escalate their privileges within the application. This issue has been patched in version 10.27.0.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @sentry/node | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
| 📦npm | @sentry/astro | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
| 📦npm | @sentry/aws-serverless | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
| 📦npm | @sentry/bun | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
| 📦npm | @sentry/google-cloud-serverless | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
| 📦npm | @sentry/nestjs | ≥ 10.11.0&&< 10.27.0 | 10.27.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @sentry/node. 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 @sentry/node to 10.27.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-65944 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-2025-65944 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-2025-65944. 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-2025-65944 in your dependencies?
O3 detects CVE-2025-65944 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.