Vulnerability · Published Jun 9, 2026 · Assigned by vmware
CVE-2026-41840
Medium 5.9
In plain English
A medium-severity memory leak 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 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.3%top 81.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Spring WebFlux applications are vulnerable to Denial of Service (DoS) attacks when processing multipart requests. 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libspring-java | no fix listed | DEBIAN-CVE-2026-41840 |
| Debian:13 | libspring-java | no fix listed | DEBIAN-CVE-2026-41840 |
| Debian:14 | libspring-java | no fix listed | DEBIAN-CVE-2026-41840 |
| Maven | org.springframework:spring-webflux | no fix listed | GHSA-83f7-v6px-pp3h |
| Maven | org.springframework:spring-webflux | no fix listed | GHSA-83f7-v6px-pp3h |
| Maven | org.springframework:spring-webflux | 7.0.8 | GHSA-83f7-v6px-pp3h |
| Maven | org.springframework:spring-webflux | 6.2.19 | GHSA-83f7-v6px-pp3h |
| Ubuntu:25.10 | libspring-java | no fix listed | UBUNTU-CVE-2026-41840 |
| Ubuntu:26.04:LTS | libspring-java | no fix listed | UBUNTU-CVE-2026-41840 |
| Ubuntu:26.10 | libspring-java | no fix listed | UBUNTU-CVE-2026-41840 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Spring | Spring Framework | 7.0.0 – before 7.0.7.16.2.0 – before 6.2.18.16.1.0 – before 6.1.285.3.0 – before 5.3.49 |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H