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[GHSA-5jp2-w3vg-5w3x] In Reactor Core, applications that use the Flux... #9427

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[GHSA-5jp2-w3vg-5w3x] In Reactor Core, applications that use the Flux... #9427

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50 changes: 47 additions & 3 deletions advisories/unreviewed/2026/08/GHSA-5jp2-w3vg-5w3x/GHSA-5jp2-w3vg-5w3x.json
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{
"schema_version": "1.4.0",
"id": "GHSA-5jp2-w3vg-5w3x",
"modified": "2026-08-27T03:32:58Z",
"modified": "2026-08-27T18:32:08Z",
"published": "2026-08-27T03:32:58Z",
"aliases": [
"CVE-2026-47863"
],
"details": "In Reactor Core, applications that use the Flux.bufferTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition.\nReactor Core 3.8.0 - 3.8.6\nReactor Core 3.7.19 and earlier",
"summary": "Reactor Core bufferTimeout fairBackpressure DoS",
"details": "In Reactor Core, applications that use the Flux.bufferTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [],
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "io.projectreactor:reactor-core"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.8.0"
},
{
"fixed": "3.8.6.1"
}
]
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "io.projectreactor:reactor-core"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.5.7"
},
{
"fixed": "3.7.20"
}
]
}
]
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47863"
},
{
"type": "WEB",
"url": "https://github.com/reactor/reactor-core/commit/1791421affc59e0a551ba8596e4122c069e782ba"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-47863"
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