Vulnerability · Published Aug 21, 2026 · Assigned by vmware
CVE-2026-59308Semantic Cache Cross-Tenant Isolation Bypass via SHA-256 Truncation
Medium 4.2
In plain English
A medium-severity security flaw in Spring AI from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)0.2%top 86.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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
Affected products (as reported)
Weakness: CWE-668 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N