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CVE-2026-59279

Unbounded persistent session allocation via repeated initialize requests

The MCP Streamable HTTP server transport (WebFlux and WebMvc variants) does not place any limit on the number of sessions it retains, and by default does not require clients to be authenticated. As a result, a remote attacker can cause the server to accumulate an unbounded number of sessions over time, gradually exhausting available memory and ultimately causing a Denial of Service that affects all legitimate clients. Affected versions: Spring AI: 2.0.0

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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CVE-2026-59308

Semantic Cache Cross-Tenant Isolation Bypass via SHA-256 Truncation

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

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
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CVE-2026-59318

DefaultToolCallingManager Global Resolver Fallback Allows Unadvertised Tool Dispatch via Prompt Injection

In Spring AI's tool calling support, the per-request tool list is advertised to the model as a boundary but is not fully enforced when a tool call is dispatched. Under certain conditions, a tool that was not made available to the current request could be invoked, potentially leading to privilege escalation. Affected versions: Spring AI: 2.0.0 Spring AI: 1.1.0 through 1.1.8 Spring AI: 1.0.0 through 1.0.9

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-47852

Predictable cache directory location allows local ONNX model substitution in Spring AI

A local attacker on a multi-user host can pre-create the deterministic cache path and plant a malicious ONNX model file. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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CVE-2026-47851

Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Reader

Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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CVE-2026-59294

Arbitrary File Write via Path Traversal in ResourceCacheService

ResourceCacheService.getCacheName() builds the on-disk filename by appending the URI fragment verbatim, without stripping path separators or .. sequences, and passes the result to new File(resourceParentFolder, newFileName) before writing the downloaded bytes there. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.9 and earlier

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
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CVE-2026-59319

RediSearch Tag Injection in RedisChatMemoryRepository Allows Cross-Conversation Data Exposure

RedisChatMemoryRepository.findByMetadata() builds RediSearch tag and text queries from caller-supplied metadata values without applying RediSearchUtil.escape(), unlike get(), clear(), and findByTimeRange() in the same class which do escape their inputs. An application that passes user-controlled values to findByMetadata() on a tag-typed metadata field allows an attacker to inject RediSearch syntax (e.g. x} | *) that breaks out of the tag clause and matches all indexed chat messages across every conversation in the index. Spring AI 2.0.0

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-47835

Spring AI vector store metadata filtering to handle special characters in Elasticsearch, OpenSearch, and GemFire Vector Stores

In Spring AI Vector Stores, special characters could be used to force the execution of arbitrary queries in Elasticsearch, OpenSearch, and GemFire VectorDB. Affected components: spring-ai-elasticsearch-store, spring-ai-opensearch-store, spring-ai-gemfire-store. Affected versions: Spring AI 1.0.0 through 1.0.x (fix 1.0.9). Spring AI 1.1.0 through 1.1.x (fix 1.1.8).

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
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CVE-2026-22744

Improper Escaping of User Input in Spring AI RediSearch Filter Enables Injection

In RedisFilterExpressionConverter of spring-ai-redis-store, when a user-controlled string is passed as a filter value for a TAG field, stringValue() inserts the value directly into the @field:{VALUE} RediSearch TAG block without escaping characters.This issue affects Spring AI: from 1.0.0 before 1.0.5, from 1.1.0 before 1.1.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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CVE-2026-41863

LLM-influenced filename used unsanitized in Path.resolve before file write in Spring AI support for Anthropic Skills API

Spring AI's support for Anthropic's Skills API used LLM-influenced filenames unsanitized in Path.resolve before writing files to disk. This could allow a malicious user to write files outside the intended target directory, including restricted directories. Affected versions: Spring AI: 1.1.0 through 1.1.x

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-41705

MilvusVectorStore DoDelete Filter‑Expression Injection Vulnerability in Spring AI

Spring AI's MilvusVectorStore#doDelete(List) implementation is vulnerable to filter-expression injection via unsanitized document IDs. Spring AI 1.0.x: affected from 1.0.0 through latest 1.0.x; upgrade to 1.0.7 or greater. Spring AI 1.1.x: affected from 1.1.0 through latest 1.1.x; upgrade to 1.1.6 or greater.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
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CVE-2026-41712

ChatMemory DEFAULT_CONVERSATION_ID causes unintended cross-user data leakage

Spring AI's chat memory component contained a problematic default that, when not explicitly overridden, could result in unintended data exposure between users.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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CVE-2026-41713

Prompt Injection via Memory Poisoning in PromptChatMemoryAdvisor

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.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
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CVE-2026-22738

SpEL Injection via Unescaped Filter Key in SimpleVectorStore Leads to Remote Code Execution

In Spring AI, a SpEL injection vulnerability exists in SimpleVectorStore when a user-supplied value is used as a filter expression key. A malicious actor could exploit this to execute arbitrary code. Only applications that use SimpleVectorStore and pass user-supplied input as a filter expression key are affected. This issue affects Spring AI: from 1.0.0 before 1.0.5, from 1.1.0 before 1.1.4.

CVSS 3.1 · 9.8 Critical EPSS 1.1% KEV · Not listed
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CVE-2026-40967

Unescaped Filter Expressions Enable Query Injection in Spring AI

In Spring AI, various FilterExpressionConverter implementations accept a filter expression object and translate them to specific vector store query languages. In several cases, keys and values are not properly escaped, leading to the ability to alter the query. Affected versions: Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
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CVE-2026-40966

VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration

In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ chat histories, including secrets and credentials, by injecting filter logic through conversationId. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as a conversationId are affected.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
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CVE-2026-40978

SQL Injection via CosmosDBVectorStore Document ID

SQL injection vulnerability in Spring AI's `CosmosDBVectorStore` allows attackers to execute arbitrary SQL queries via crafted document IDs. Affected versions: Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-40979

Exposure of ONNX Model via Shared Environment in Spring AI

In Spring AI, having access to a shared environment can expose the ONNX model used by the application. Affected versions: Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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CVE-2026-40980

Memory Exhaustion via Malformed PDF in Spring AI

In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by `ForkPDFLayoutTextStripper`. Affected versions: Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2026-22743

Server-Side Request Forgery via Filter Expression Keys in Neo4jVectorStore

Spring AI's spring-ai-neo4j-store contains a Cypher injection vulnerability in Neo4jVectorFilterExpressionConverter. When a user-controlled string is passed as a filter expression key in Neo4jVectorFilterExpressionConverter of spring-ai-neo4j-store, doKey() embeds the key into a backtick-delimited Cypher property accessor (node.`metadata.`) after stripping only double quotes, without escaping embedded backticks.This issue affects Spring AI: from 1.0.0 before 1.0.5, from 1.1.0 before 1.1.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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