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Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-47844

CVE-2026-47844LOW
Spring Reactor Netty — Reactor Netty HTTP Server Leaks Exception Details
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  L  N  N    3.7   .0024   14.1     —
AFFECTED
  Product        Versions  Fixed
  Reactor Netty  1.3.0 –   —
TIMELINE
  May 20  Reserved by vmware
  Aug 26  Published (CNA: vmware)
  Sep 4   RESCORED — CVE-2026-47844 (Spring Reactor Netty). CVSS 5.3 → 3.7 (NVD).
CNA: vmware · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

In specific scenarios, the Reactor Netty HTTP Server may leak exception details across unrelated requests. In order for this to happen, the server must be configured with Brave Tracing. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
May 20, 2026ReservedReserved by vmware
August 26, 2026PublishedPublished (CNA: vmware)
September 4, 2026RESCOREDRESCORED — CVE-2026-47844 (Spring Reactor Netty). CVSS 5.3 → 3.7 (NVD).

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
SpringReactor Netty—1.3.0—

References (1)

Related

Authoritative record: CVE-2026-47844 at cve.org

Vendors: spring

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-47844 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.