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Vulnerability · Published Aug 27, 2026 · Assigned by vmware

CVE-2026-47886Spring Framework Denial of Service via Unbounded Exponentiation in SpEL Expressions

High 7.5

In plain English

A high-severity uncontrolled resource consumption in Spring Framework from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 60.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libspring-javano fix listedDEBIAN-CVE-2026-47886
Debian:13libspring-javano fix listedDEBIAN-CVE-2026-47886
Debian:14libspring-javano fix listedDEBIAN-CVE-2026-47886
Ubuntu:26.04:LTSlibspring-javano fix listedUBUNTU-CVE-2026-47886
Ubuntu:26.10libspring-javano fix listedUBUNTU-CVE-2026-47886

Affected products (as reported)

VendorProductVersions
Spring Spring Framework 7.0.0 – through 7.0.86.2.0 – through 6.2.196.1.0 – through 6.1.286.0.0 – through 6.0.305.3.0 – through 5.3.490 – through 5.2.25.RELEASE

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References