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OpenAdvisories
Critical · 9.8 CVE-2026-47892 EUVD-2026-66860GHSA-9qf2-26p9-2q2q

Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints

Published Aug 27, 2026 · Updated Aug 28, 2026 · Assigned by vmware

Description

A WebFlux application using functional endpoints and deployed with DispatcherServlet may be vulnerable to a header predicate bypass in a pre-flight request.
Spring Framework 7.0.0 - 7.0.8
Spring Framework 6.2.0 - 6.2.19
Spring Framework 6.1.0 - 6.1.28
Spring Framework 6.0.0 - 6.0.30
Spring Framework 5.3.0 - 5.3.49
Spring Framework 5.2.5.RELEASE - 5.2.25.RELEASE

Affected products

VendorProductAffectedFixed
Spring Spring Framework 7.0.0 – ≤ 7.0.8, 6.2.0 – ≤ 6.2.19, 6.1.0 – ≤ 6.1.28, 6.0.0 – ≤ 6.0.30, 5.3.0 – ≤ 5.3.49, 5.2.5.RELEASE – ≤ 5.2.25.RELEASE —

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
Debian 14 libspring-java No fix yet —
Debian 13 libspring-java No fix yet —
Debian 12 libspring-java No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 libspring-java No fix yet —
Ubuntu 26.04 LTS libspring-java No fix yet —
Show 3 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 —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven org.springframework:spring-webflux >= 5.2.5.RELEASE, <= 5.2.25.RELEASE — GHSA-9qf2-26p9-2q2q
Maven org.springframework:spring-webflux >= 5.3.0, <= 5.3.49 — GHSA-9qf2-26p9-2q2q
Maven org.springframework:spring-webflux >= 6.0.0, <= 6.0.30 — GHSA-9qf2-26p9-2q2q
Maven org.springframework:spring-webflux >= 6.1.0, <= 6.1.28 — GHSA-9qf2-26p9-2q2q
Maven org.springframework:spring-webflux >= 6.2.0, <= 6.2.19 — GHSA-9qf2-26p9-2q2q
Maven org.springframework:spring-webflux >= 7.0.0, < 7.0.9 7.0.9 GHSA-9qf2-26p9-2q2q

Advisories 1

References