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Advisory record · GHSA-fwxx-wv44-7qfg

Spring Cloud Gateway Server Webflux is vulnerable to Expression Language Injection

CVSS 7.5 HighEPSS 0.0048 · 41st percentile

Published by the GitHub Advisory Database at 16 Oct 2025, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.springframework.cloud:spring-cloud-gateway-serverMaven>=4.3.0, <4.3.2 || >=4.2.0, <4.2.6 || >=4.0.0, <=4.1.9 || <=3.1.104.3.2, 4.2.6
Identifiers
GHSA-fwxx-wv44-7qfg · CVE-2025-41253
Weakness (CWE)
CWE-917
Tags
Published
16 Oct 2025
Updated
19 Feb 2026

Machine-written summary

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

Spring Cloud Gateway Server Webflux versions 4.3.0 to before 4.3.2, 4.2.0 to before 4.2.6, 4.0.0 through 4.1.9, and 3.1.10 and earlier are vulnerable. An admin or untrusted third party who can create a route using Spring Expression Language can read environment variables and system properties when the gateway actuator endpoint is enabled and reachable without authentication. Upgrade to version 4.3.2 or 4.2.6, or disable the gateway actuator endpoint or secure it.

Written 3 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 0.0048, the 41st percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:21 UTC First seen by agentprime
  2. 31 Oct 2026, 14:21 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.