CVE-2026-40967Network attack vector

Vector-store query manipulation via unescaped filters

Published Apr 28, 2026 · Updated Apr 28, 2026

Query injection in Spring AI 1.0.0 through 1.0.5 and 1.1.0 through 1.1.4 allows remote attackers to alter vector-store queries. FilterExpressionConverter implementations place user-controlled metadata keys and values into backend-specific query syntaxes without context-appropriate escaping. Exposure requires a VectorStore application to pass user-supplied filterExpression input, which lets crafted delimiters or operators change the records selected by an operation.

CVSS severity8.6
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Query injection in Spring AI 1.0.0 through 1.0.5 and 1.1.0 through 1.1.4 allows remote attackers to alter vector-store queries. FilterExpressionConverter implementations place user-controlled metadata keys and values into backend-specific query syntaxes without context-appropriate escaping. Exposure requires a VectorStore application to pass user-supplied filterExpression input, which lets crafted delimiters or operators change the records selected by an operation.

The record

CVE
CVE-2026-40967
Published
Apr 28, 2026
Updated
Apr 28, 2026
Vendor
Spring
Product
Spring AI
Classifications
CWE-94
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <1.0.6
  2. Affected versionversion=1.1.0 <1.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring AIversion=1.0.0 <1.0.6; version=1.1.0 <1.1.5

Published CVSS scores

8.6VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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