Spring Framework Denial of Service via Integer Overflow in SpEL Expressions
CVE-2026-41849

7.5HIGH

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41849?

An integer overflow vulnerability exists in the evaluation logic of the Spring Expression Language (SpEL). An attacker can exploit this by supplying a specially crafted SpEL expression that triggers excessive resource consumption, resulting in a Denial of Service (DoS).

Affected versions: Spring Framework 5.3.0 through 5.3.48.

Affected Version(s)

Spring Framework 5.3.0 < 5.3.49

References

https://spring.io/security/cve-2026-41849

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

.