CVE-2026-47863: Reactor Core Buffer Timeout Fair Backpressure Stall
In Reactor Core versions prior to 3.8.7/3.7.20, FluxBufferTimeout with fairBackpressure can stall residual items indefinitely because timer rescheduling is missing after a partial flush.
Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0
Java
Javagreprules fetch cve-2026-47863-reactor-core-buffer-timeout-fair-backpressure-stall --engine opengrepDescription
In Reactor Core versions prior to 3.8.7/3.7.20, FluxBufferTimeout with fairBackpressure can stall residual items indefinitely because timer rescheduling is missing after a partial flush.
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