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-2026-59304

CVE-2026-59304LOW

Spring Spring Cloud Stream — Improper caching of the original content type in Spring Cloud Stream Avro

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   H   N  U  L  L  N    3.8   .0021   10.3     —

AFFECTED
  Product              Versions  Fixed
  Spring Cloud Stream  5.0.0 –   —

TIMELINE
  Jul 4   Reserved by vmware
  Aug 27  Published (CNA: vmware)
  Sep 4   RESCORED — CVE-2026-59304 (Spring Cloud Stream). CVSS 3.1 → 3.8 (NVD).

CWE-843 · CNA: vmware · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Improper caching of the original content type in Spring Cloud Stream Avro. Spring Cloud Stream 5.0.0 - 5.0.2 Spring Cloud Stream 4.3.0 - 4.3.3 Spring Cloud Stream 4.2.0 - 4.2.6

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 4, 2026	Reserved	Reserved by vmware
August 27, 2026	Published	Published (CNA: vmware)
September 4, 2026	RESCORED	RESCORED — CVE-2026-59304 (Spring Cloud Stream). CVSS 3.1 → 3.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Spring	Spring Cloud Stream	—	5.0.0	—

Weaknesses

CWE-843

References (1)

https://spring.io/security/cve-2026-59304 [Patch, Vendor Advisory]

Authoritative record: CVE-2026-59304 at cve.org

Vendors: spring

Weaknesses: CWE-843

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-59304 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.