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Critical · 9.8 CVE-2026-47890 EUVD-2026-66858GHSA-j9f9-w8pj-32f8

Spring Framework Server Sent Event stream corruption while rendering fragments

Published Aug 27, 2026 · Updated Aug 27, 2026 · Assigned by vmware

Description

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

Affected products

VendorProductAffectedFixed
Spring Spring Framework 7.0.0 – ≤ 7.0.8, 6.2.0 – ≤ 6.2.19 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 libspring-java No fix yet —
Ubuntu 26.04 LTS libspring-java No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 22.04 LTS libspring-java No fix yet —
Ubuntu Pro 20.04 LTS libspring-java No fix yet —
Ubuntu Pro 18.04 LTS libspring-java No fix yet —
Ubuntu Pro 16.04 LTS libspring-java No fix yet —
Ubuntu Pro 14.04 LTS libspring-java No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven org.springframework:spring-webflux >= 6.2.0, <= 6.2.19 — GHSA-j9f9-w8pj-32f8
Maven org.springframework:spring-webflux >= 7.0.0, < 7.0.9 7.0.9 GHSA-j9f9-w8pj-32f8
Maven org.springframework:spring-webmvc >= 6.2.0, <= 6.2.19 — GHSA-j9f9-w8pj-32f8
Maven org.springframework:spring-webmvc >= 7.0.0, < 7.0.9 7.0.9 GHSA-j9f9-w8pj-32f8

Advisories 1

References