CVE-2026-47886

Spring Framework Denial of Service via Unbounded Exponentiation in SpEL Expressions

State: Published
Severity: 7.5 High
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

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

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Spring FrameworkSpring	7.0.0 through 7.0.8Affected 6.2.0 through 6.2.19Affected 6.1.0 through 6.1.28Affected 6.0.0 through 6.0.30Affected 5.3.0 through 5.3.49Affected 5.2.25.RELEASE and earlierAffected

References

https://spring.io/security/cve-2026-47886

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