Input Validation Flaw in Spring Framework WebFlux by Pivotal Software
CVE-2026-47885

7.5HIGH

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
27 August 2026

What is CVE-2026-47885?

A significant input validation issue in the PartEventHttpMessageReader component of Spring WebFlux allows for bypassing the enforced maxPartSize limit. When maxInMemorySize is configured to -1, the absence of proper size restrictions could lead to potential denial-of-service attacks or memory exhaustion vulnerabilities. It is crucial for developers using affected versions to apply necessary patches to mitigate the risks associated with this flaw.

Affected Version(s)

Spring Framework 7.0.0 <= 7.0.8

Spring Framework 6.2.0 <= 6.2.19

Spring Framework 6.1.0 <= 6.1.28

References

https://spring.io/security/cve-2026-47885

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.