CVE-2026-47891
Received Received - Intake

XML Parsing Denial of Service in Spring Framework

Publication date: 2026-08-27

Last updated on: 2026-08-27

Assigner: VMware

Description
A Spring WebFlux application that relies on the Aalto XML processor to parse XML input does not correctly enforce the maxInMemorySize limit. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-27
Last Modified
2026-08-27
Generated
2026-08-27
AI Q&A
2026-08-27
EPSS Evaluated
N/A
NVD
CVE-2026-47891
EUVD
EUVD-2026-66859

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
spring_project spring_framework to 5.2.26 (exc)
spring_project spring_framework to 5.3.50 (exc)
spring_project spring_framework to 6.0.31 (exc)
spring_project spring_framework to 6.1.29 (exc)
spring_project spring_framework to 6.2.20 (exc)
spring_project spring_framework to 7.0.9 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability affects Spring WebFlux applications that use the Aalto XML processor to parse XML input. It fails to enforce the maxInMemorySize limit, which could allow attackers to cause memory exhaustion by sending specially crafted XML data.

Detection Guidance

Detecting this vulnerability requires checking if your Spring WebFlux application uses the Aalto XML processor and if the maxInMemorySize limit is not enforced. Inspect application logs for XML parsing errors or memory exhaustion events. Check dependency versions with commands like 'mvn dependency:tree' or 'gradle dependencies' to identify affected Spring Framework versions.

Impact Analysis

An attacker could exploit this to consume excessive memory on the server, leading to degraded performance, crashes, or denial of service. Systems processing large or malformed XML inputs are most at risk.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling memory exhaustion attacks through unchecked XML input parsing. Such attacks may lead to denial-of-service conditions, disrupting availability of systems handling sensitive personal or health data. Organizations must ensure systems are upgraded to mitigate risks to data processing integrity and security.

Mitigation Strategies

Upgrade affected Spring Framework versions to fixed releases: 5.2.26, 5.3.50, 6.0.31, 6.1.29, 6.2.20, 7.0.9 (OSS), or 7.0.8.1 (Enterprise). No additional mitigation steps are required beyond upgrading.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-47891. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart