Medium [CVE-2026-47892] Header Predicate Bypass in WebFlux Functional Endpoints
This medium-severity Red Hat Linux advisory covers CVE-2026-47892 affecting Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Fuse 7.
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
A flaw was found in Spring Framework. This vulnerability allows a header predicate bypass to occur in a pre-flight request within a WebFlux application that uses functional endpoints and is deployed with DispatcherServlet.
This bypass could potentially lead to unexpected behavior or security policy circumvention. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
Weakness: CWE-807. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Fuse 7; Red Hat OpenShift Dev Spaces.
Will not fix / out of support: Red Hat Fuse 7. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: resteasy.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.