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Vulnerability · Published Jun 9, 2026 · Assigned by vmware

CVE-2026-41850Spring Framework Algorithmic Denial of Service via SpEL Expressions

High 7.5

In plain English

A high-severity security flaw 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 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 67.0% 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 are vulnerable to an Algorithmic Denial of Service (DoS). By providing a specially crafted expression, an attacker can trigger excessive resource consumption during evaluation, leading to application degradation or unavailability. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libspring-javano fix listedDEBIAN-CVE-2026-41850
Debian:13libspring-javano fix listedDEBIAN-CVE-2026-41850
Debian:14libspring-javano fix listedDEBIAN-CVE-2026-41850
Mavenorg.springframework:spring-expressionno fix listedGHSA-r5w3-xv2f-j59q
Mavenorg.springframework:spring-expression7.0.8GHSA-r5w3-xv2f-j59q
Mavenorg.springframework:spring-expression6.2.19GHSA-r5w3-xv2f-j59q
Mavenorg.springframework:spring-expressionno fix listedGHSA-r5w3-xv2f-j59q
Ubuntu:25.10libspring-javano fix listedUBUNTU-CVE-2026-41850
Ubuntu:26.04:LTSlibspring-javano fix listedUBUNTU-CVE-2026-41850
Ubuntu:26.10libspring-javano fix listedUBUNTU-CVE-2026-41850

Affected products (as reported)

VendorProductVersions
Spring Spring Framework 7.0.0 – before 7.0.7.16.2.0 – before 6.2.18.16.1.0 – before 6.1.285.3.0 – before 5.3.49

Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References