getsentry sentry-javascript Flaw (CVE-2026-114139) Rated CVSS 9.1
A newly published critical vulnerability in getsentry sentry-javascript carries a CVSS score of 9.1. Here is what is affected and how to respond.
Key points
- CVE-2026-114139 affects getsentry sentry-javascript.
- CVSS 9.1 (Critical).
- No exploitation confirmed yet.
getsentry sentry-javascript is affected by CVE-2026-114139, a security flaw that the National Vulnerability Database rates 9.1 out of 10.
At a glance
- CVE
- CVE-2026-114139
- Product
- getsentry sentry-javascript
- CVSS
- 9.1 Critical
- Weakness
- CWE-693
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: Sentry-Javascript is an official Sentry SDKs for JavaScript. From 9.36.0 until 9.47.2, 10.75.2, and 11.0.0-rc.1, the webpack integration for @sentry/nextjs skips application middleware for every request path under a configured tunnelRoute, while the tunnel rewrite serves only the exact tunnel path with valid o and p query parameters. When an application route directly collides with the tunnel path or a root dynamic segment resolves under it, an unauthenticated request can reach that route without middleware authorization. Exploitation requires tunnelRoute, a webpack build, a colliding route, and middleware being the only authorization control. This issue is fixed in versions 9.47.2, 10.75.2, and 11.0.0-rc.1.
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| Getsentry | sentry-javascript | >= 9.36.0, < 9.47.2, >= 10.0.0-alpha.0, < 10.75.2, >= 11.0.0-alpha.0, < 11.0.0-rc.1 |
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-114139
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-114139?
CVE-2026-114139 is a CWE-693 vulnerability in getsentry sentry-javascript.
How severe is CVE-2026-114139?
It has a CVSS score of 9.1 Critical.
Is CVE-2026-114139 being exploited?
There is no public confirmation of exploitation at the time of publication.
