CVE-2026-41849
Spring Framework Denial of Service via Integer Overflow in SpEL Expressions
Description
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.
INFO
Published Date :
June 9, 2026, 5:16 a.m.
Last Modified :
June 9, 2026, 8:36 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | dcf2e128-44bd-42ed-91e8-88f912c1401d | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Spring Framework to a non-vulnerable version.
- Apply vendor patches when available.
- Validate all SpEL expressions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41849.
| URL | Resource |
|---|---|
| https://spring.io/security/cve-2026-41849 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41849 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41849
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41849 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41849 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 09, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:* versions from (including) 5.3.0 up to (excluding) 5.3.49 Added Reference Type VMware: https://spring.io/security/cve-2026-41849 Types: Vendor Advisory -
New CVE Received by [email protected]
Jun. 09, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-190 Added Reference https://spring.io/security/cve-2026-41849