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-2026-59308

CVE-2026-59308MEDIUM

Spring Spring AI — Semantic Cache Cross-Tenant Isolation Bypass via SHA-256 Truncation

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  L  N  N    4.3   .0022   11.8     —

AFFECTED
  Product    Versions  Fixed
  Spring AI  2.0.0 –   —

TIMELINE
  Jul 4   Reserved by vmware
  Aug 21  Published (CNA: vmware)
  Sep 16  RESCORED — CVE-2026-59308 (Spring AI). CVSS 4.2 → 4.3 (NVD).

CWE-668 · CNA: vmware · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

In Spring AI's Semantic Cache support, the context hash used to isolate cached responses between different system prompts could allow cached responses to be shared across unrelated contexts. Affected versions: Spring AI: 2.0.0

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 4, 2026	Reserved	Reserved by vmware
August 21, 2026	Published	Published (CNA: vmware)
September 16, 2026	RESCORED	RESCORED — CVE-2026-59308 (Spring AI). CVSS 4.2 → 4.3 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Spring	Spring AI	—	2.0.0	—

Weaknesses

CWE-668

References (1)

https://spring.io/security/cve-2026-59308 [Vendor Advisory]

Authoritative record: CVE-2026-59308 at cve.org

Vendors: spring

Weaknesses: CWE-668

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-59308 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.