Improper Handling of Unexpected Data Type Affecting org.webjars.npm:on-headers package, versions [0,]
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-JAVA-ORGWEBJARSNPM-10773730
- published18 Jul 2025
- disclosed17 Jul 2025
- creditKaung Zin Hein, Sebastian Podjasek
Introduced: 17 Jul 2025
NewCVE-2025-7339 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Improper Handling of Unexpected Data Type via the response.writeHead function. An attacker can manipulate HTTP response headers by passing an array to this function, potentially leading to unintended disclosure or modification of header information.
Workaround
This vulnerability can be mitigated by passing an object to response.writeHead() instead of an array.