Reactor Core 3.8.0 - 3.8.6
Reactor Core 3.7.19 and earlier
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spring | Reactor Core | unaffected |
|
No data.
No data.
No data available yet.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://spring.io/security/cve-2026-47863 |
|
Thu, 27 Aug 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 |
Thu, 27 Aug 2026 00:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In Reactor Core, applications that use the Flux.bufferTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition. Reactor Core 3.8.0 - 3.8.6 Reactor Core 3.7.19 and earlier | |
| Title | Reactor Core bufferTimeout fair-backpressure pipeline permanently hangs when upstream delivers items during an active flush | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: vmware
Published:
Updated: 2026-08-26T23:28:48.599Z
Reserved: 2026-05-20T10:00:55.157Z
Link: CVE-2026-47863
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-27T01:17:33.467
Modified: 2026-08-27T01:17:33.467
Link: CVE-2026-47863
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-27T01:30:13Z