CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-47857

In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition. Reactor Core 3.8.0 - 3.8.6 Reactor Core 3.5.0 - 3.7.19 Reactor Core 3.4.41 and earlier

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 12.7%

CVSS Severity

CVSS v3 Score 5.9

References

https://spring.io/security/cve-2026-47857

Products affected by CVE-2026-47857

Broadcom » Reactor Core » Version: 2.5.0

cpe:2.3:a:broadcom:reactor_core:2.5.0
Broadcom » Reactor Core » Version: 3.0.0

cpe:2.3:a:broadcom:reactor_core:3.0.0
Broadcom » Reactor Core » Version: 3.0.1

cpe:2.3:a:broadcom:reactor_core:3.0.1
Broadcom » Reactor Core » Version: 3.0.2

cpe:2.3:a:broadcom:reactor_core:3.0.2
Broadcom » Reactor Core » Version: 3.0.3

cpe:2.3:a:broadcom:reactor_core:3.0.3
Broadcom » Reactor Core » Version: 3.0.4

cpe:2.3:a:broadcom:reactor_core:3.0.4
Broadcom » Reactor Core » Version: 3.0.5

cpe:2.3:a:broadcom:reactor_core:3.0.5
Broadcom » Reactor Core » Version: 3.0.6

cpe:2.3:a:broadcom:reactor_core:3.0.6
Broadcom » Reactor Core » Version: 3.0.7

cpe:2.3:a:broadcom:reactor_core:3.0.7
Broadcom » Reactor Core » Version: 3.1.0

cpe:2.3:a:broadcom:reactor_core:3.1.0
Broadcom » Reactor Core » Version: 3.1.1

cpe:2.3:a:broadcom:reactor_core:3.1.1
Broadcom » Reactor Core » Version: 3.1.10

cpe:2.3:a:broadcom:reactor_core:3.1.10
Broadcom » Reactor Core » Version: 3.1.11

cpe:2.3:a:broadcom:reactor_core:3.1.11
Broadcom » Reactor Core » Version: 3.1.12

cpe:2.3:a:broadcom:reactor_core:3.1.12
Broadcom » Reactor Core » Version: 3.1.13

cpe:2.3:a:broadcom:reactor_core:3.1.13
Broadcom » Reactor Core » Version: 3.1.14

cpe:2.3:a:broadcom:reactor_core:3.1.14
Broadcom » Reactor Core » Version: 3.1.15

cpe:2.3:a:broadcom:reactor_core:3.1.15
Broadcom » Reactor Core » Version: 3.1.16

cpe:2.3:a:broadcom:reactor_core:3.1.16
Broadcom » Reactor Core » Version: 3.1.2

cpe:2.3:a:broadcom:reactor_core:3.1.2
Broadcom » Reactor Core » Version: 3.1.3

cpe:2.3:a:broadcom:reactor_core:3.1.3
Broadcom » Reactor Core » Version: 3.1.4

cpe:2.3:a:broadcom:reactor_core:3.1.4
Broadcom » Reactor Core » Version: 3.1.5

cpe:2.3:a:broadcom:reactor_core:3.1.5
Broadcom » Reactor Core » Version: 3.1.6

cpe:2.3:a:broadcom:reactor_core:3.1.6
Broadcom » Reactor Core » Version: 3.1.7

cpe:2.3:a:broadcom:reactor_core:3.1.7
Broadcom » Reactor Core » Version: 3.1.8

cpe:2.3:a:broadcom:reactor_core:3.1.8
Broadcom » Reactor Core » Version: 3.1.9

cpe:2.3:a:broadcom:reactor_core:3.1.9
Broadcom » Reactor Core » Version: 3.2.0

cpe:2.3:a:broadcom:reactor_core:3.2.0
Broadcom » Reactor Core » Version: 3.2.1

cpe:2.3:a:broadcom:reactor_core:3.2.1
Broadcom » Reactor Core » Version: 3.2.10

cpe:2.3:a:broadcom:reactor_core:3.2.10
Broadcom » Reactor Core » Version: 3.2.11

cpe:2.3:a:broadcom:reactor_core:3.2.11
Broadcom » Reactor Core » Version: 3.2.12

cpe:2.3:a:broadcom:reactor_core:3.2.12
Broadcom » Reactor Core » Version: 3.2.13

cpe:2.3:a:broadcom:reactor_core:3.2.13
Broadcom » Reactor Core » Version: 3.2.14

cpe:2.3:a:broadcom:reactor_core:3.2.14
Broadcom » Reactor Core » Version: 3.2.15

cpe:2.3:a:broadcom:reactor_core:3.2.15
Broadcom » Reactor Core » Version: 3.2.16

cpe:2.3:a:broadcom:reactor_core:3.2.16
Broadcom » Reactor Core » Version: 3.2.17

cpe:2.3:a:broadcom:reactor_core:3.2.17
Broadcom » Reactor Core » Version: 3.2.18

cpe:2.3:a:broadcom:reactor_core:3.2.18
Broadcom » Reactor Core » Version: 3.2.19

cpe:2.3:a:broadcom:reactor_core:3.2.19
Broadcom » Reactor Core » Version: 3.2.2

cpe:2.3:a:broadcom:reactor_core:3.2.2
Broadcom » Reactor Core » Version: 3.2.20

cpe:2.3:a:broadcom:reactor_core:3.2.20
Broadcom » Reactor Core » Version: 3.2.21

cpe:2.3:a:broadcom:reactor_core:3.2.21
Broadcom » Reactor Core » Version: 3.2.22

cpe:2.3:a:broadcom:reactor_core:3.2.22
Broadcom » Reactor Core » Version: 3.2.3

cpe:2.3:a:broadcom:reactor_core:3.2.3
Broadcom » Reactor Core » Version: 3.2.4

cpe:2.3:a:broadcom:reactor_core:3.2.4
Broadcom » Reactor Core » Version: 3.2.5

cpe:2.3:a:broadcom:reactor_core:3.2.5
Broadcom » Reactor Core » Version: 3.2.6

cpe:2.3:a:broadcom:reactor_core:3.2.6
Broadcom » Reactor Core » Version: 3.2.7

cpe:2.3:a:broadcom:reactor_core:3.2.7
Broadcom » Reactor Core » Version: 3.2.8

cpe:2.3:a:broadcom:reactor_core:3.2.8
Broadcom » Reactor Core » Version: 3.2.9

cpe:2.3:a:broadcom:reactor_core:3.2.9
Broadcom » Reactor Core » Version: 3.3.0

cpe:2.3:a:broadcom:reactor_core:3.3.0
Broadcom » Reactor Core » Version: 3.3.1

cpe:2.3:a:broadcom:reactor_core:3.3.1
Broadcom » Reactor Core » Version: 3.3.10

cpe:2.3:a:broadcom:reactor_core:3.3.10
Broadcom » Reactor Core » Version: 3.3.11

cpe:2.3:a:broadcom:reactor_core:3.3.11
Broadcom » Reactor Core » Version: 3.3.12

cpe:2.3:a:broadcom:reactor_core:3.3.12
Broadcom » Reactor Core » Version: 3.3.13

cpe:2.3:a:broadcom:reactor_core:3.3.13
Broadcom » Reactor Core » Version: 3.3.14

cpe:2.3:a:broadcom:reactor_core:3.3.14
Broadcom » Reactor Core » Version: 3.3.15

cpe:2.3:a:broadcom:reactor_core:3.3.15
Broadcom » Reactor Core » Version: 3.3.16

cpe:2.3:a:broadcom:reactor_core:3.3.16
Broadcom » Reactor Core » Version: 3.3.17

cpe:2.3:a:broadcom:reactor_core:3.3.17
Broadcom » Reactor Core » Version: 3.3.18

cpe:2.3:a:broadcom:reactor_core:3.3.18
Broadcom » Reactor Core » Version: 3.3.19

cpe:2.3:a:broadcom:reactor_core:3.3.19
Broadcom » Reactor Core » Version: 3.3.2

cpe:2.3:a:broadcom:reactor_core:3.3.2
Broadcom » Reactor Core » Version: 3.3.20

cpe:2.3:a:broadcom:reactor_core:3.3.20
Broadcom » Reactor Core » Version: 3.3.21

cpe:2.3:a:broadcom:reactor_core:3.3.21
Broadcom » Reactor Core » Version: 3.3.22

cpe:2.3:a:broadcom:reactor_core:3.3.22
Broadcom » Reactor Core » Version: 3.3.3

cpe:2.3:a:broadcom:reactor_core:3.3.3
Broadcom » Reactor Core » Version: 3.3.4

cpe:2.3:a:broadcom:reactor_core:3.3.4
Broadcom » Reactor Core » Version: 3.3.5

cpe:2.3:a:broadcom:reactor_core:3.3.5
Broadcom » Reactor Core » Version: 3.3.6

cpe:2.3:a:broadcom:reactor_core:3.3.6
Broadcom » Reactor Core » Version: 3.3.7

cpe:2.3:a:broadcom:reactor_core:3.3.7
Broadcom » Reactor Core » Version: 3.3.8

cpe:2.3:a:broadcom:reactor_core:3.3.8
Broadcom » Reactor Core » Version: 3.3.9

cpe:2.3:a:broadcom:reactor_core:3.3.9
Broadcom » Reactor Core » Version: 3.4.0

cpe:2.3:a:broadcom:reactor_core:3.4.0
Broadcom » Reactor Core » Version: 3.4.1

cpe:2.3:a:broadcom:reactor_core:3.4.1
Broadcom » Reactor Core » Version: 3.4.10

cpe:2.3:a:broadcom:reactor_core:3.4.10
Broadcom » Reactor Core » Version: 3.4.11

cpe:2.3:a:broadcom:reactor_core:3.4.11
Broadcom » Reactor Core » Version: 3.4.12

cpe:2.3:a:broadcom:reactor_core:3.4.12
Broadcom » Reactor Core » Version: 3.4.13

cpe:2.3:a:broadcom:reactor_core:3.4.13
Broadcom » Reactor Core » Version: 3.4.14

cpe:2.3:a:broadcom:reactor_core:3.4.14
Broadcom » Reactor Core » Version: 3.4.15

cpe:2.3:a:broadcom:reactor_core:3.4.15
Broadcom » Reactor Core » Version: 3.4.16

cpe:2.3:a:broadcom:reactor_core:3.4.16
Broadcom » Reactor Core » Version: 3.4.17

cpe:2.3:a:broadcom:reactor_core:3.4.17
Broadcom » Reactor Core » Version: 3.4.18

cpe:2.3:a:broadcom:reactor_core:3.4.18
Broadcom » Reactor Core » Version: 3.4.19

cpe:2.3:a:broadcom:reactor_core:3.4.19
Broadcom » Reactor Core » Version: 3.4.2

cpe:2.3:a:broadcom:reactor_core:3.4.2
Broadcom » Reactor Core » Version: 3.4.20

cpe:2.3:a:broadcom:reactor_core:3.4.20
Broadcom » Reactor Core » Version: 3.4.21

cpe:2.3:a:broadcom:reactor_core:3.4.21
Broadcom » Reactor Core » Version: 3.4.22

cpe:2.3:a:broadcom:reactor_core:3.4.22
Broadcom » Reactor Core » Version: 3.4.23

cpe:2.3:a:broadcom:reactor_core:3.4.23
Broadcom » Reactor Core » Version: 3.4.24

cpe:2.3:a:broadcom:reactor_core:3.4.24
Broadcom » Reactor Core » Version: 3.4.25

cpe:2.3:a:broadcom:reactor_core:3.4.25
Broadcom » Reactor Core » Version: 3.4.26

cpe:2.3:a:broadcom:reactor_core:3.4.26
Broadcom » Reactor Core » Version: 3.4.27

cpe:2.3:a:broadcom:reactor_core:3.4.27
Broadcom » Reactor Core » Version: 3.4.28

cpe:2.3:a:broadcom:reactor_core:3.4.28
Broadcom » Reactor Core » Version: 3.4.29

cpe:2.3:a:broadcom:reactor_core:3.4.29
Broadcom » Reactor Core » Version: 3.4.3

cpe:2.3:a:broadcom:reactor_core:3.4.3
Broadcom » Reactor Core » Version: 3.4.30

cpe:2.3:a:broadcom:reactor_core:3.4.30
Broadcom » Reactor Core » Version: 3.4.31

cpe:2.3:a:broadcom:reactor_core:3.4.31
Broadcom » Reactor Core » Version: 3.4.32

cpe:2.3:a:broadcom:reactor_core:3.4.32
Broadcom » Reactor Core » Version: 3.4.33

cpe:2.3:a:broadcom:reactor_core:3.4.33
Broadcom » Reactor Core » Version: 3.4.34

cpe:2.3:a:broadcom:reactor_core:3.4.34
Broadcom » Reactor Core » Version: 3.4.35

cpe:2.3:a:broadcom:reactor_core:3.4.35
Broadcom » Reactor Core » Version: 3.4.36

cpe:2.3:a:broadcom:reactor_core:3.4.36
Broadcom » Reactor Core » Version: 3.4.37

cpe:2.3:a:broadcom:reactor_core:3.4.37
Broadcom » Reactor Core » Version: 3.4.38

cpe:2.3:a:broadcom:reactor_core:3.4.38
Broadcom » Reactor Core » Version: 3.4.39

cpe:2.3:a:broadcom:reactor_core:3.4.39
Broadcom » Reactor Core » Version: 3.4.4

cpe:2.3:a:broadcom:reactor_core:3.4.4
Broadcom » Reactor Core » Version: 3.4.40

cpe:2.3:a:broadcom:reactor_core:3.4.40
Broadcom » Reactor Core » Version: 3.4.41

cpe:2.3:a:broadcom:reactor_core:3.4.41
Broadcom » Reactor Core » Version: 3.4.5

cpe:2.3:a:broadcom:reactor_core:3.4.5
Broadcom » Reactor Core » Version: 3.4.6

cpe:2.3:a:broadcom:reactor_core:3.4.6
Broadcom » Reactor Core » Version: 3.4.7

cpe:2.3:a:broadcom:reactor_core:3.4.7
Broadcom » Reactor Core » Version: 3.4.8

cpe:2.3:a:broadcom:reactor_core:3.4.8
Broadcom » Reactor Core » Version: 3.4.9

cpe:2.3:a:broadcom:reactor_core:3.4.9
Broadcom » Reactor Core » Version: 3.5.0

cpe:2.3:a:broadcom:reactor_core:3.5.0
Broadcom » Reactor Core » Version: 3.5.1

cpe:2.3:a:broadcom:reactor_core:3.5.1
Broadcom » Reactor Core » Version: 3.5.10

cpe:2.3:a:broadcom:reactor_core:3.5.10
Broadcom » Reactor Core » Version: 3.5.11

cpe:2.3:a:broadcom:reactor_core:3.5.11
Broadcom » Reactor Core » Version: 3.5.12

cpe:2.3:a:broadcom:reactor_core:3.5.12
Broadcom » Reactor Core » Version: 3.5.13

cpe:2.3:a:broadcom:reactor_core:3.5.13
Broadcom » Reactor Core » Version: 3.5.14

cpe:2.3:a:broadcom:reactor_core:3.5.14
Broadcom » Reactor Core » Version: 3.5.15

cpe:2.3:a:broadcom:reactor_core:3.5.15
Broadcom » Reactor Core » Version: 3.5.16

cpe:2.3:a:broadcom:reactor_core:3.5.16
Broadcom » Reactor Core » Version: 3.5.17

cpe:2.3:a:broadcom:reactor_core:3.5.17
Broadcom » Reactor Core » Version: 3.5.18

cpe:2.3:a:broadcom:reactor_core:3.5.18
Broadcom » Reactor Core » Version: 3.5.19

cpe:2.3:a:broadcom:reactor_core:3.5.19
Broadcom » Reactor Core » Version: 3.5.2

cpe:2.3:a:broadcom:reactor_core:3.5.2
Broadcom » Reactor Core » Version: 3.5.20

cpe:2.3:a:broadcom:reactor_core:3.5.20
Broadcom » Reactor Core » Version: 3.5.3

cpe:2.3:a:broadcom:reactor_core:3.5.3
Broadcom » Reactor Core » Version: 3.5.4

cpe:2.3:a:broadcom:reactor_core:3.5.4
Broadcom » Reactor Core » Version: 3.5.5

cpe:2.3:a:broadcom:reactor_core:3.5.5
Broadcom » Reactor Core » Version: 3.5.6

cpe:2.3:a:broadcom:reactor_core:3.5.6
Broadcom » Reactor Core » Version: 3.5.7

cpe:2.3:a:broadcom:reactor_core:3.5.7
Broadcom » Reactor Core » Version: 3.5.8

cpe:2.3:a:broadcom:reactor_core:3.5.8
Broadcom » Reactor Core » Version: 3.5.9

cpe:2.3:a:broadcom:reactor_core:3.5.9
Broadcom » Reactor Core » Version: 3.6.0

cpe:2.3:a:broadcom:reactor_core:3.6.0
Broadcom » Reactor Core » Version: 3.6.1

cpe:2.3:a:broadcom:reactor_core:3.6.1
Broadcom » Reactor Core » Version: 3.6.10

cpe:2.3:a:broadcom:reactor_core:3.6.10
Broadcom » Reactor Core » Version: 3.6.11

cpe:2.3:a:broadcom:reactor_core:3.6.11
Broadcom » Reactor Core » Version: 3.6.12

cpe:2.3:a:broadcom:reactor_core:3.6.12
Broadcom » Reactor Core » Version: 3.6.13

cpe:2.3:a:broadcom:reactor_core:3.6.13
Broadcom » Reactor Core » Version: 3.6.14

cpe:2.3:a:broadcom:reactor_core:3.6.14
Broadcom » Reactor Core » Version: 3.6.15

cpe:2.3:a:broadcom:reactor_core:3.6.15
Broadcom » Reactor Core » Version: 3.6.16

cpe:2.3:a:broadcom:reactor_core:3.6.16
Broadcom » Reactor Core » Version: 3.6.17

cpe:2.3:a:broadcom:reactor_core:3.6.17
Broadcom » Reactor Core » Version: 3.6.18

cpe:2.3:a:broadcom:reactor_core:3.6.18
Broadcom » Reactor Core » Version: 3.6.2

cpe:2.3:a:broadcom:reactor_core:3.6.2
Broadcom » Reactor Core » Version: 3.6.3

cpe:2.3:a:broadcom:reactor_core:3.6.3
Broadcom » Reactor Core » Version: 3.6.4

cpe:2.3:a:broadcom:reactor_core:3.6.4
Broadcom » Reactor Core » Version: 3.6.5

cpe:2.3:a:broadcom:reactor_core:3.6.5
Broadcom » Reactor Core » Version: 3.6.6

cpe:2.3:a:broadcom:reactor_core:3.6.6
Broadcom » Reactor Core » Version: 3.6.7

cpe:2.3:a:broadcom:reactor_core:3.6.7
Broadcom » Reactor Core » Version: 3.6.8

cpe:2.3:a:broadcom:reactor_core:3.6.8
Broadcom » Reactor Core » Version: 3.6.9

cpe:2.3:a:broadcom:reactor_core:3.6.9
Broadcom » Reactor Core » Version: 3.7.0

cpe:2.3:a:broadcom:reactor_core:3.7.0
Broadcom » Reactor Core » Version: 3.7.1

cpe:2.3:a:broadcom:reactor_core:3.7.1
Broadcom » Reactor Core » Version: 3.7.10

cpe:2.3:a:broadcom:reactor_core:3.7.10
Broadcom » Reactor Core » Version: 3.7.11

cpe:2.3:a:broadcom:reactor_core:3.7.11
Broadcom » Reactor Core » Version: 3.7.12

cpe:2.3:a:broadcom:reactor_core:3.7.12
Broadcom » Reactor Core » Version: 3.7.13

cpe:2.3:a:broadcom:reactor_core:3.7.13
Broadcom » Reactor Core » Version: 3.7.14

cpe:2.3:a:broadcom:reactor_core:3.7.14
Broadcom » Reactor Core » Version: 3.7.15

cpe:2.3:a:broadcom:reactor_core:3.7.15
Broadcom » Reactor Core » Version: 3.7.16

cpe:2.3:a:broadcom:reactor_core:3.7.16
Broadcom » Reactor Core » Version: 3.7.17

cpe:2.3:a:broadcom:reactor_core:3.7.17
Broadcom » Reactor Core » Version: 3.7.18

cpe:2.3:a:broadcom:reactor_core:3.7.18
Broadcom » Reactor Core » Version: 3.7.19

cpe:2.3:a:broadcom:reactor_core:3.7.19
Broadcom » Reactor Core » Version: 3.7.2

cpe:2.3:a:broadcom:reactor_core:3.7.2
Broadcom » Reactor Core » Version: 3.7.3

cpe:2.3:a:broadcom:reactor_core:3.7.3
Broadcom » Reactor Core » Version: 3.7.4

cpe:2.3:a:broadcom:reactor_core:3.7.4
Broadcom » Reactor Core » Version: 3.7.5

cpe:2.3:a:broadcom:reactor_core:3.7.5
Broadcom » Reactor Core » Version: 3.7.6

cpe:2.3:a:broadcom:reactor_core:3.7.6
Broadcom » Reactor Core » Version: 3.7.7

cpe:2.3:a:broadcom:reactor_core:3.7.7
Broadcom » Reactor Core » Version: 3.7.8

cpe:2.3:a:broadcom:reactor_core:3.7.8
Broadcom » Reactor Core » Version: 3.7.9

cpe:2.3:a:broadcom:reactor_core:3.7.9
Broadcom » Reactor Core » Version: 3.8.0

cpe:2.3:a:broadcom:reactor_core:3.8.0
Broadcom » Reactor Core » Version: 3.8.1

cpe:2.3:a:broadcom:reactor_core:3.8.1
Broadcom » Reactor Core » Version: 3.8.2

cpe:2.3:a:broadcom:reactor_core:3.8.2
Broadcom » Reactor Core » Version: 3.8.3

cpe:2.3:a:broadcom:reactor_core:3.8.3
Broadcom » Reactor Core » Version: 3.8.4

cpe:2.3:a:broadcom:reactor_core:3.8.4
Broadcom » Reactor Core » Version: 3.8.5

cpe:2.3:a:broadcom:reactor_core:3.8.5
Broadcom » Reactor Core » Version: 3.8.6

cpe:2.3:a:broadcom:reactor_core:3.8.6

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-47857

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