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Medium

Spring Framework DoS with Multipart Temp Files in WebFlux

  • Disclosed: 29.04.2026
  • Updated: 11.10.2026 13:20

A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K. Under some circumstances, temp files may remain not deleted after the request is fully processed. This allows an attacker to consume available disk space.

Older, unsupported versions are also affected.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.springframework:spring-webflux >= 7.0.0, < 7.0.7, >= 6.2.0, < 6.2.18, >= 6.1.0, <= 6.1.26, <= 5.3.47 7.0.7, 6.2.18

References

CVSS score 6.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-400
Platform
Java / Kotlin (Maven)
Package
org.springframework:spring-webflux
Disclosed
29.04.2026
Updated
11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-5843-p793-ghmm - CC BY 4.0

Vulnerability history: org.springframework:spring-webflux

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (20) in the archive
Total entries
20
First → latest
01.2020 08.2026
Without a fix
1
Exploited in attacks
1

Severity breakdown

  • Critical 3
  • High 4
  • Medium 11
  • Low 2

Disclosures per year

Severity:
  1. Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints
    Critical · 9.8 CVE-2026-47892 >= 5.2.5.RELEASE, <= 5.2.25.RELEASE, >= 5.3.0, <= 5.3.49, >= 6.0.0, <= 6.0.30, >= 6.1.0, <= 6.1.28, >= 6.2.0, <= 6.2.19, >= 7.0.0, < 7.0.9 7.0.9
  2. Spring Framework Server Sent Event stream corruption while rendering fragments
    Critical · 9.8 CVE-2026-47890 >= 6.2.0, <= 6.2.19, >= 7.0.0, < 7.0.9 7.0.9
  3. Spring Framework Denial of Service via Versioned Resources in Spring MVC and WebFlux
    High · 7.5 CVE-2026-41842 >= 7.0.0, < 7.0.8, >= 6.2.0, < 6.2.19, >= 6.1.0, <= 6.1.21, <= 5.3.39 7.0.8, 6.2.19
  4. Spring Framework DoS with Multipart Temp Files in WebFlux this entry
    Medium · 6.5 CVE-2026-22740 >= 7.0.0, < 7.0.7, >= 6.2.0, < 6.2.18, >= 6.1.0, <= 6.1.26, <= 5.3.47 7.0.7, 6.2.18
  5. Spring Framework Path Traversal vulnerability
    High · 7.5 CVE-2024-38819 >= 6.1.0, < 6.1.14, <= 5.3.40, >= 6.0.0, <= 6.0.24 6.1.14
  6. Path traversal vulnerability in functional web frameworks
    High · 7.5 CVE-2024-38816 >= 6.1.0, < 6.1.13, >= 6.0.0, <= 6.0.23, >= 5.3.0, <= 5.3.39 6.1.13
  7. Remote Code Execution in Spring Framework
    Critical · 9.8 Exploited in attacks CVE-2022-22965 < 5.2.20.RELEASE, >= 5.3.0, < 5.3.18 5.2.20.RELEASE, 5.3.18
  8. RFD attack via Content-Disposition header sourced from request input by Spring MVC or Spring WebFlux Application
    High · 7.5 CVE-2020-5398 >= 5.2.0.RELEASE, < 5.2.3.RELEASE, >= 5.1.0.RELEASE, < 5.1.13.RELEASE, >= 5.0.0.RELEASE, < 5.0.16.RELEASE 5.2.3.RELEASE, 5.1.13.RELEASE, 5.0.16.RELEASE

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