CVE-2026-47886

Spring Framework Denial of Service via Unbounded Exponentiation in SpEL Expressions

HIGH

7.5

CVSS Score

Published: August 27, 2026 at 05:21 AM UTC

Updated: September 10, 2026 at 04:18 PM UTC

2 products affected across 2 vendorsSpring FrameworkSpring Framework

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

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

Affected

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

Spring Framework · VMware

95%

v < 5.2.265.3.0 ≤ v < 5.3.506.0.0 ≤ v < 6.0.316.1.0 ≤ v < 6.1.296.2.0 ≤ v < 6.2.207.0.0 ≤ v < 7.0.8.1

Affected range stops below 5.2.26, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.50, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.31, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.29, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.20, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.8.1, so it looks safe — our inference, not a vendor statement

Spring Framework · Spring

60%

v ≤ 5.2.25.RELEASE5.3.0 ≤ v ≤ 5.3.496.0.0 ≤ v ≤ 6.0.306.1.0 ≤ v ≤ 6.1.286.2.0 ≤ v ≤ 6.2.197.0.0 ≤ v ≤ 7.0.85.3.0 6.0.0 6.1.0 6.2.0 7.0.0

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-2026-47886

References (1)

Vendor Advisory

Source: [email protected]

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP

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

Vector?

Quick Info

StatusANALYZED

CWE

CWE-400

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