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

7.5HIGH

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41850?

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 Version(s)

Spring Framework 7.0.0 < 7.0.8

Spring Framework 6.2.0 < 6.2.19

Spring Framework 6.1.0 < 6.1.28

References

https://spring.io/security/cve-2026-41850

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.