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Advisory record · GHSA-xjhv-p3fv-x24r

In Reactor Netty HTTP Server a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack

CVSS 7.5 HighEPSS 0.011 · 66th percentile

Published by the GitHub Advisory Database at 15 Nov 2023, 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>=1.1.0, <1.1.13 || >=1.0.0, <1.0.391.1.13, 1.0.39
Identifiers
GHSA-xjhv-p3fv-x24r · CVE-2023-34062
Weakness (CWE)
CWE-22
Tags
Published
15 Nov 2023
Updated
10 Sept 2026

Machine-written summary

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

Reactor Netty HTTP Server (reactor-netty-http) versions 1.1.0 up to 1.1.13 and 1.0.0 up to 1.0.39 are vulnerable. A remote attacker can send a specially crafted URL to perform a directory traversal, but only when the server is configured to serve static resources. Upgrade to version 1.1.13 or 1.0.39. The source gives few details beyond this.

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
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CNA (vmware)
  • CISA KEV Not listed.
  • EPSS 0.011, the 66th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 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.