CVE-2026-47886

Analyzed Analyzed - Analysis Complete

Denial of Service in Spring Framework via SpEL Power Operator

Publication date: 2026-08-27

Last updated on: 2026-09-10

Assigner: VMware

Description

Applications that evaluate user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack when the power operator (^) is used with a BigDecimal or BigInteger operand and a large exponent value. 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

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Meta Information

Published

2026-08-27

Last Modified

2026-09-10

Generated

2026-09-16

AI Q&A

2026-08-27

EPSS Evaluated

2026-09-15

NVD

CVE-2026-47886

EUVD

EUVD-2026-66854

Affected Vendors & Products

Vendor	Product	Version / Range
vmware	spring_framework	From 6.2.0 (inc) to 6.2.20 (exc)
vmware	spring_framework	From 6.1.0 (inc) to 6.1.29 (exc)
vmware	spring_framework	From 5.3.0 (inc) to 5.3.50 (exc)
vmware	spring_framework	From 6.0.0 (inc) to 6.0.31 (exc)
vmware	spring_framework	to 5.2.26 (exc)
vmware	spring_framework	From 7.0.0 (inc) to 7.0.8.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a Denial of Service (DoS) vulnerability in the Spring Framework where applications evaluating untrusted Spring Expression Language (SpEL) expressions with the power operator (^) using BigDecimal or BigInteger operands and large exponents can cause excessive CPU usage and JVM heap memory consumption, leading to application degradation or unavailability.

Detection Guidance

Detecting this vulnerability requires checking if your Spring Framework version is within the affected range. Use commands like 'find / -name "spring-core*.jar" 2>/dev/null' to locate Spring JAR files, then run 'java -jar spring-core*.jar 2>/dev/null | grep -i "version"' to check the version. Alternatively, check application logs for SpEL expression evaluations.

Impact Analysis

If exploited, this vulnerability can cause your application to slow down significantly or crash entirely due to high CPU and memory usage. This may disrupt services relying on the affected Spring Framework versions.

Compliance Impact

This vulnerability could indirectly impact compliance with standards like GDPR or HIPAA by causing system unavailability or degraded performance due to excessive CPU and memory consumption during a DoS attack. Unavailability of systems handling personal or health data may violate availability requirements under these regulations.

Mitigation Strategies

Upgrade to fixed versions of Spring Framework: 7.0.9, 6.2.20, 6.1.29, 6.0.31, or 5.3.50. For older versions like 5.2.x, upgrade to the latest 5.2.x release. No additional mitigation is required beyond upgrading.

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