CVE-2026-41840: spring spring framework
CVSS: 5.9v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-41840DEBIAN-CVE-2026-41840CGA-2hjf-qvv8-38wvCGA-9g3m-m2j5-64fpCGA-h76p-fc22-v4rvCGA-j7h4-hwp5-fv8fCGA-p496-4q37-m4prGHSA-83f7-v6px-pp3hCGA-r5x5-x2wh-67v2CGA-r9c2-xvr9-frmpCGA-vqmw-h8mr-mw59
Published 09-06-2026Last modified 20-06-2026
Vulnerability summary
CVE-2026-41840 is a medium (CVSS 5.9) vulnerability in spring spring framework. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)EPSS score
0.37%
0%100%
Low · +0.10 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 09-06-2026PublishedVulnerability first disclosed.
- 20-06-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
6 scores · 6 sources · 1 versionMedium 5.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · MavenEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
+0.10 pp
From 0.27% on 19-09-2026
19-09-202619-10-2026
EPSS score0.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard4 products
- kafbat-ui< 1.5.0-r12
- kafbat-ui-fips< 1.5.0-r6
- kayenta-2025.2All versions (No fix recorded)
- kayenta-fips-2025.2All versions (No fix recorded)
Debian1 product
- libspring-javaAll versions (No fix recorded)
Org.springframework1 product
- spring-webflux≥ 7.0.0, < 7.0.8 | ≥ 6.2.0, < 6.2.19 | ≥ 6.1.0, ≤ 6.1.21 | ≤ 5.3.39
Spring1 product
- spring framework≥ 7.0.0, < 7.0.7.1 | ≥ 6.2.0, < 6.2.18.1 | ≥ 6.1.0, < 6.1.28 | ≥ 5.3.0, < 5.3.49
Ubuntu1 product
- libspring-javaAll versions (No fix recorded)
Vmware1 product
- spring_framework≥ 5.3.0, < 5.3.49 | ≥ 6.1.0, < 6.1.28 | ≥ 6.2.0, < 6.2.18.1 | ≥ 7.0.0, < 7.0.7.1
6 vendors · 9 products
