Open Redirect Affecting io.projectreactor.netty:reactor-netty-http package, versions [,1.3.7)
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-IOPROJECTREACTORNETTY-19267392
- published26 Aug 2026
- disclosed20 Aug 2026
- creditYu Bao from PayPal Cyber Security Team, Arpit Jain
Introduced: 20 Aug 2026
NewCVE-2026-47848 (opens in a new tab)How to fix?
Upgrade io.projectreactor.netty:reactor-netty-http to version 1.3.7 or higher.
Overview
Affected versions of this package are vulnerable to Open Redirect in scenarios where a WebSocket handshake is redirected to a different origin and the HTTP client is explicitly configured to follow redirects. An attacker can obtain sensitive credentials by leveraging crafted redirect responses.
Note: This is only exploitable if the HTTP client is set to follow redirects.