Answer in brief
CVE-2026-41840 records a Medium severity (CVSS 5.9) security vulnerability in Spring Framework Denial of Service via Multipart Requests in WebFlux. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Answer in brief
CVE-2026-41840 records a Medium severity (CVSS 5.9) security vulnerability in Spring Framework Denial of Service via Multipart Requests in WebFlux. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Update org.springframework:spring-webflux to 7.0.8; org.springframework:spring-webflux to 6.2.19 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanVulnerability describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-41840 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| org.springframework:spring-webfluxmaven | >=7.0.0,<=7.0.7 | 7.0.8 |
| org.springframework:spring-webfluxmaven | >=6.2.0,<=6.2.18 | 6.2.19 |
| org.springframework:spring-webfluxmaven | >=6.1.0,<=6.1.21 | Not reported |
| org.springframework:spring-webfluxmaven | <=5.3.39 | Not reported |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-41840 records a Medium severity (CVSS 5.9) security vulnerability in Spring Framework Denial of Service via Multipart Requests in WebFlux. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for org.springframework:spring-webflux, org.springframework:spring-webflux, org.springframework:spring-webflux.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardUpdate org.springframework:spring-webflux to 7.0.8; org.springframework:spring-webflux to 6.2.19 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanVulnerability describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-41840 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| org.springframework:spring-webfluxmaven | >=7.0.0,<=7.0.7 | 7.0.8 |
| org.springframework:spring-webfluxmaven | >=6.2.0,<=6.2.18 | 6.2.19 |
| org.springframework:spring-webfluxmaven | >=6.1.0,<=6.1.21 | Not reported |
| org.springframework:spring-webfluxmaven | <=5.3.39 | Not reported |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-41840 records a Medium severity (CVSS 5.9) security vulnerability in Spring Framework Denial of Service via Multipart Requests in WebFlux. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for org.springframework:spring-webflux, org.springframework:spring-webflux, org.springframework:spring-webflux.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardSpring 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.
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.