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Vulnerability · Published Apr 29, 2026 · Assigned by vmware

CVE-2026-22740Spring Framework DoS with Multipart Temp Files in WebFlux

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in Spring Framework from VMware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 71.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libspring-javano fix listedDEBIAN-CVE-2026-22740
Debian:13libspring-javano fix listedDEBIAN-CVE-2026-22740
Debian:14libspring-javano fix listedDEBIAN-CVE-2026-22740
Mavenorg.springframework:spring-webfluxno fix listedGHSA-5843-p793-ghmm
Mavenorg.springframework:spring-webflux7.0.7GHSA-5843-p793-ghmm
Mavenorg.springframework:spring-webflux6.2.18GHSA-5843-p793-ghmm
Mavenorg.springframework:spring-webfluxno fix listedGHSA-5843-p793-ghmm
Ubuntu:25.10libspring-javano fix listedUBUNTU-CVE-2026-22740
Ubuntu:26.04:LTSlibspring-javano fix listedUBUNTU-CVE-2026-22740
Ubuntu:26.10libspring-javano fix listedUBUNTU-CVE-2026-22740

Affected products (as reported)

VendorProductVersions
VMware Spring Framework 7.0.0 – before 7.0.76.2.0 – before 6.2.186.1.0 – before 6.1.275.3.0 – before 5.3.48

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References