Information Exposure Affecting next package, versions >=12.3.5 <12.3.6>=13.5.9 <13.5.10>=14.2.25 <14.2.26>=15.2.3 <15.2.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-NEXT-9634163
- published3 Apr 2025
- disclosed2 Apr 2025
- creditJinseo Kim, Ry0taK
Introduced: 2 Apr 2025
NewCVE-2025-30218 (opens in a new tab)How to fix?
Upgrade next to version 12.3.6, 13.5.10, 14.2.26, 15.2.4 or higher.
Overview
next is a react framework.
Affected versions of this package are vulnerable to Information Exposure via the exposure of x-middleware-subrequest-id to external hosts due to an incomplete fix for CVE-2025-29927. An attacker can potentially access sensitive information by initiating a fetch request to a third-party within Middleware, which will send the x-middleware-subrequest-id to that third party.
Note:
This is only exploitable if the attacker is controlling the third-party.