# CVE-2026-47890: Spring Framework Server Sent Event stream corruption while rendering fragments

Source: https://junglewise.ai/threats/cve-2026-47890-spring-framework-server-sent-event-stream-corruption-while  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-27  
License: CC BY 4.0 with a link back

CVE-2026-47890 · Severity: critical · CVSS 9.8 · Published 2026-08-27

Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE) with view fragments.
Spring Framework 7.0.0 - 7.0.8
Spring Framework 6.2.0 - 6.2.19

Technologies: [org.springframework:spring-webflux (Maven)](https://junglewise.ai/threats/technologies/org-springframework-spring-webflux), [org.springframework:spring-webmvc (Maven)](https://junglewise.ai/threats/technologies/org-springframework-spring-webmvc). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2026-47890 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47890 being exploited in the wild.

**How severe is CVE-2026-47890?** Critical severity, with a CVSS score of 9.8, published 27 August 2026.

**Which products and versions are affected?** org.springframework:spring-webflux (Maven) ECOSYSTEM:introduced=6.2.0,last_affected=6.2.19; org.springframework:spring-webmvc (Maven) ECOSYSTEM:introduced=6.2.0,last_affected=6.2.19.

**Is there a fix for CVE-2026-47890?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-47890?** Check whether you run org.springframework:spring-webflux (Maven) or org.springframework:spring-webmvc (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- org.springframework:spring-webflux (Maven) ECOSYSTEM:introduced=6.2.0,last_affected=6.2.19
- org.springframework:spring-webmvc (Maven) ECOSYSTEM:introduced=6.2.0,last_affected=6.2.19

## Identifiers

- CVE-2026-47890
- GHSA-j9f9-w8pj-32f8

## Related threats

- [Spring Framework header predicate bypass in WebFlux functional endpoints](https://junglewise.ai/threats/cve-2026-47892-spring-framework-header-predicate-bypass-in-webflux-functional)
- [Spring Framework SSRF and RCE in XsltView](https://junglewise.ai/threats/cve-2026-47884-spring-framework-ssrf-and-rce-in-xsltview)
- [VMware Spring Framework denial of service in static resource resolution](https://junglewise.ai/threats/cve-2026-41842-vmware-spring-framework-dos-in-static-resource-resolution)
- [VMware Spring Framework multipart request smuggling in MVC and WebFlux](https://junglewise.ai/threats/cve-2026-41853-vmware-spring-framework-multipart-request-smuggling-in-mvc-and)
- [VMware Spring Framework security bypass in WebFlux Kotlin Router DSL](https://junglewise.ai/threats/cve-2026-41847-vmware-spring-framework-security-bypass-in-webflux-kotlin-router)