CVE-2026-47863

high

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

References

https://spring.io/security/cve-2026-47863

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-66828

Details

Source: Mitre, NVD

Published: 2026-08-27

Updated: 2026-09-01

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H