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Advisory record · GHSA-83f7-v6px-pp3h

Spring Framework Denial of Service via Multipart Requests in WebFlux

CVSS 5.9 MediumEPSS 0.0027 · 18th percentile

Published by the GitHub Advisory Database at 9 Jun 2026, 06:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.springframework:spring-webfluxMaven>=7.0.0, <7.0.8 || >=6.2.0, <6.2.19 || >=6.1.0, <=6.1.21 || <=5.3.397.0.8, 6.2.19
Identifiers
GHSA-83f7-v6px-pp3h · CVE-2026-41840
Weakness (CWE)
CWE-400 · CWE-401
Tags
Published
9 Jun 2026
Updated
10 Sept 2026

Machine-written summary

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

Spring WebFlux (spring-webflux) is vulnerable to denial of service when processing multipart requests. The source gives few details on what an attacker must send or how severe the impact is. Upgrade to 7.0.8 or 6.2.19; no fix is listed for the 6.1 or 5.3 lines.

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
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (vmware)
  • CISA KEV Not listed.
  • EPSS 0.0027, the 18th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 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.