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Advisory record · GHSA-4q2v-9p7v-3v22

Reactor Netty HTTP is vulnerable to credential leaks during chained redirects

CVSS 6.1 MediumEPSS 0.0040 · 35th percentile

Published by the GitHub Advisory Database at 16 Jul 2025, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.projectreactor.netty:reactor-netty-httpMaven>=1.3.0-M1, <1.3.0-M5 || <1.2.81.3.0-M5, 1.2.8
Identifiers
GHSA-4q2v-9p7v-3v22 · CVE-2025-22227
Weakness (CWE)
CWE-200
Tags
Published
16 Jul 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Reactor Netty HTTP (io.projectreactor.netty:reactor-netty-http) versions 1.3.0-M1 to before 1.3.0-M5, and versions before 1.2.8, can leak credentials during certain chained redirects. An attacker must be able to cause a redirect chain, and this only affects clients explicitly configured to follow redirects. Upgrade to 1.3.0-M5 or 1.2.8, or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.1 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CNA (vmware)
  • CISA KEV Not listed.
  • EPSS 0.0040, the 35th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.