# CVE-2026-41849: VMware Spring Framework integer overflow in SpEL evaluation

Source: https://junglewise.ai/threats/cve-2026-41849-vmware-spring-framework-integer-overflow-in-spel-evaluation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-07-30  
License: CC BY 4.0 with a link back

CVE-2026-41849 · Severity: high · CVSS 7.5 · Published 2026-06-09

The Spring Framework is a widely used software foundation for building Java-based enterprise applications. A vulnerability in its expression language component allows an attacker to send a specially crafted request that causes the server to consume excessive CPU or memory resources. This can lead to a denial-of-service (DoS) condition, making the application unavailable to legitimate users.

Technologies: [org.springframework:spring-expression (Maven)](https://junglewise.ai/threats/technologies/org-springframework-spring-expression), [VMware Spring Framework](https://junglewise.ai/threats/technologies/spring-framework). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [VMware](https://junglewise.ai/threats/vendors/vmware).

## Quick answers

**Is CVE-2026-41849 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-41849 being exploited in the wild.

**How severe is CVE-2026-41849?** High severity, with a CVSS score of 7.5, published 9 June 2026.

**Which products and versions are affected?** org.springframework:spring-expression (Maven) <= 5.3.39, ECOSYSTEM:introduced=0,last_affected=5.3.39; VMware Spring Framework 5.3.0 through 5.3.48.

**Is there a fix for CVE-2026-41849?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-41849 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-41849?** Check whether you run org.springframework:spring-expression (Maven) or VMware Spring Framework at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An integer overflow vulnerability (CWE-190) exists within the evaluation logic of the Spring Expression Language (SpEL) in the Spring Framework. The flaw is located in the `spring-expression` module, where certain calculations during expression evaluation do not properly handle large integer values, leading to a wraparound. A remote, unauthenticated attacker can exploit this by providing a specially crafted SpEL expression that triggers an infinite loop or excessive memory allocation. This results in a Denial of Service (DoS) by exhausting system resources. The vulnerability affects versions 5.3.0 through 5.3.48; users should upgrade to a patched version (e.g., 5.3.49 or later) as recommended by the vendor.

## Affected products

- VMware Spring Framework 5.3.0 through 5.3.48

## Identifiers

- CVE-2026-41849
- GHSA-775g-4xr8-78h8

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory

## References

- [https://spring.io/security/cve-2026-41849](https://spring.io/security/cve-2026-41849)

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