What’s Vulnerable › Vulnerabilities
CVE-2019-11284: Reactor Netty authentication leak in redirects
- Severity: high (CVSS 8.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2019-10-17 · updated 2026-09-04
- Weakness: CWE-522
Description
Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through redirects, including authorization ones. A remote unauthenticated malicious user may gain access to credentials for a different server than they have access to.
Affected products
- Spring Reactor Netty: from 0.8.0 before 0.8.11 — fixed in 0.8.11
How to fix
Upgrade to a fixed version: Spring Reactor Netty 0.8.11. Check the vendor advisory for mitigations.
References
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