CVE-2026-22740

Spring Framework DoS with Multipart Temp Files in WebFlux

MEDIUM

6.5

CVSS Score

Published: April 29, 2026 at 10:46 AM UTC

Updated: October 26, 2026 at 08:10 PM UTC

1 product affected across 1 vendorSpring Framework

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Framework · VMware

95%

v < 5.3.486.1.0 ≤ v < 6.1.276.2.0 ≤ v < 6.2.187.0.0 ≤ v < 7.0.75.3.0 6.1.0 6.2.0 7.0.0

Affected range stops below 5.3.48, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.27, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://spring.io/security/cve-2026-22740

References (2)

Vendor Advisory

Source: cverecord

https://spring.io/security/cve-2026-22740

US Government Resource

Source: cverecord

https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H&version=3.1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMvmware

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-400

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