Vulnerability · Published Jun 9, 2026 · Assigned by vmware
CVE-2026-41849Spring Framework Denial of Service via Integer Overflow in SpEL Expressions
High 7.5
In plain English
A high-severity integer overflow 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 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libspring-java | no fix listed | DEBIAN-CVE-2026-41849 |
| Debian:13 | libspring-java | no fix listed | DEBIAN-CVE-2026-41849 |
| Debian:14 | libspring-java | no fix listed | DEBIAN-CVE-2026-41849 |
| Maven | org.springframework:spring-expression | no fix listed | GHSA-775g-4xr8-78h8 |
| Ubuntu:25.10 | libspring-java | no fix listed | UBUNTU-CVE-2026-41849 |
| Ubuntu:26.04:LTS | libspring-java | no fix listed | UBUNTU-CVE-2026-41849 |
| Ubuntu:26.10 | libspring-java | no fix listed | UBUNTU-CVE-2026-41849 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Spring | Spring Framework | 5.3.0 – before 5.3.49 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H