What’s Vulnerable › Vulnerabilities
CVE-2020-5404: Authentication Leak On Redirect With Reactor Netty HttpClient
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-03-03 · updated 2026-09-04
- Weakness: CWE-522
Description
The HttpClient from Reactor Netty, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects.
Affected products
- Spring Reactor Netty: from 0.8.0 through 0.8.15; from 0.9.0 through 0.9.4
References
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