CVE-2020-5404

Authentication Leak On Redirect With Reactor Netty HttpClient

MEDIUM
5.9
CVSS Score
Published: March 3, 2020 at 05:55 PM UTC
Updated: September 4, 2026 at 06:59 PM UTC
1 product affected across 1 vendorReactor Netty

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.7%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.8 ≤ v < v0.8.16.RELEASE0.8.0 ≤ v ≤ 0.8.150.9 ≤ v < v0.9.5.RELEASE0.9.0 ≤ v ≤ 0.9.40.80.9
Affected range stops below v0.8.16.RELEASE, so it looks safe — our inference, not a vendor statement
Affected range stops below v0.9.5.RELEASE, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
https://pivotal.io/security/cve-2020-5404

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-522

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