Security Bulletin: Security Vulnerability identified in reactor-core-3.7.11.jar used by IBM Maximo Application Suite - MREF

Summary There is a vulnerability in reactor-core-3.7.11.jar used by IBM Maximo Application Suite - MREF Vulnerability Details CVEID:CVE-2026-47857 DESCRIPTION: In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Servic...

Security Bulletin: Multiple vulnerabilties in DevOps Test Hub

Summary Multiple vulnerabilities addressed in DevOps Test Hub in version 12.0.0 Vulnerability Details CVEID:CVE-2026-47857 DESCRIPTION: In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service DoS condition. Reactor...

Security Bulletin:Vulnerabilities exists in IBM Netezza Appliance

Summary Vulnerabilities identified in the IBM Netezza Appliance have been remediated in the latest security patch release of NPS Vulnerability Details CVEID:CVE-2026-47857 DESCRIPTION: In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are...

io.projectreactor/reactor-core: Reactor Core: Denial of Service via Flux.windowTimeout operator with fairBackpressure

A flaw was found in Reactor Core. A remote attacker could exploit this vulnerability by using the Flux.windowTimeout operator with fairBackpressure enabled, leading to a Denial of Service DoS condition. This could cause applications to become unresponsive or crash...

io.projectreactor/reactor-core: Reactor Core: Denial of Service via Flux.windowTimeout operator with fairBackpressure

A flaw was found in Reactor Core. A remote attacker could exploit this vulnerability by using the Flux.windowTimeout operator with fairBackpressure enabled, leading to a Denial of Service DoS condition. This could cause applications to become unresponsive or crash...

Denial-of-Service (DoS)

Reactor Core is vulnerable to a Denial-of-Service DoS. The vulnerability is due to improper handling of the Flux.windowTimeout operator when fairBackpressure is enabled, which allows an attacker to trigger excessive resource consumption and potentially exhaust application resources...

CVE-2026-47857

A flaw was found in Reactor Core. A remote attacker could exploit this vulnerability by using the Flux.windowTimeout operator with fairBackpressure enabled, leading to a Denial of Service DoS condition. This could cause applications to become unresponsive or crash. Mitigation Mitigation for this...

EUVD-2026-66824

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...

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...

CVE-2026-47857: Integer Overflow or Wraparound

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...

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...

CVE-2026-47857 Reactor Core windowTimeout fair-backpressure stream hang due to 20-bit index wrap-around

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...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Flux.windowTimeout function when fairBackpressure is enabled. An attacker can cause the stream to hang indefinitely and exhaust system resources by maintaining long-lived...