Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Lifecycle Timeline
3Blast Radius
ecosystem impact- 37 maven packages depend on org.springframework.ai:spring-ai-client-chat (6 direct, 31 indirect)
Ecosystem-wide dependent count for version 1.1.0-M1.
DescriptionCVE.org
A malicious user could craft input that is stored in conversation memory and later interpreted by the model in an unintended way. Applications using the affected advisor with user-controlled input may be susceptible to manipulation of model behavior across conversation turns.
AnalysisAI
Conversation memory poisoning in VMware Spring AI allows remote unauthenticated attackers to inject malicious input that persists across conversation turns and manipulates AI model behavior. The vulnerability achieves high integrity impact (CVSS 8.2) through stored prompt injection, enabling attackers to alter model responses, extract sensitive context, or bypass application logic without authentication. No active exploitation confirmed at time of analysis, but the network-accessible attack surface and low complexity make this a priority for applications processing user-generated conversational input.
Technical ContextAI
Spring AI is VMware's framework for building AI-powered applications with conversation memory capabilities. This vulnerability exploits CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine), manifesting as Server-Side Template Injection (SSTI) within the conversation memory layer. The flaw occurs when user-controlled input is stored in conversation context without proper sanitization, then later retrieved and processed by the language model as instructions rather than data. The CPE identifier (cpe:2.3:a:vmware:spring_ai) indicates the core Spring AI library is affected. This represents a stored injection attack where malicious prompts persist in memory state and influence subsequent model invocations, similar to traditional stored XSS but targeting LLM reasoning instead of web browsers.
RemediationAI
Consult the VMware Spring AI security advisory at https://spring.io/security/cve-2026-41713 for patch version and upgrade instructions. Primary remediation is upgrading to the patched Spring AI release that implements proper input sanitization in conversation memory handling. Until patching is complete, implement defense-in-depth controls: (1) Apply strict input validation to filter prompt injection attempts before storing in conversation memory, though this may reduce legitimate use cases for special characters and may be bypassed by novel injection techniques. (2) Implement conversation memory isolation per user session to prevent cross-session contamination, which adds architectural complexity but limits blast radius. (3) Add output filtering to detect and block unexpected model behavior patterns, noting this is reactive rather than preventive. (4) Consider disabling conversation memory features in the advisor configuration for internet-facing applications processing untrusted input, which eliminates the vulnerability but removes multi-turn conversation capabilities. Evaluate trade-offs between security and functionality based on application requirements and user trust boundaries.
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-29449
GHSA-5852-phmh-8fhr