# CVE-2026-40979: Spring AI's ONNX model cache defaults to world-writable predictable /tmp directory

Source: https://junglewise.ai/threats/cve-2026-40979-spring-ai-s-onnx-model-cache-defaults-to-world-writable  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-28  
License: CC BY 4.0 with a link back

CVE-2026-40979 · Severity: medium · CVSS 6.1 · Published 2026-04-28

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)

Technologies: [VMware Spring Ai](https://junglewise.ai/threats/technologies/spring-ai). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [VMware](https://junglewise.ai/threats/vendors/vmware).

## Quick answers

**Is CVE-2026-40979 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40979 being exploited in the wild.

**How severe is CVE-2026-40979?** Medium severity, with a CVSS score of 6.1, published 28 April 2026.

**Which products and versions are affected?** org.springframework.ai:spring-ai-transformers (Maven) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6.

**Is there a fix for CVE-2026-40979?** Yes. org.springframework.ai:spring-ai-transformers (Maven): upgrade to 1.0.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-40979?** Check whether you run org.springframework.ai:spring-ai-transformers (Maven) or VMware Spring Ai at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.springframework.ai:spring-ai-transformers (Maven): upgrade to 1.0.6 or later

  ```sh
  # set org.springframework.ai:spring-ai-transformers to 1.0.6 in your pom.xml or build.gradle
  ```


## Affected products

- org.springframework.ai:spring-ai-transformers (Maven) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6
- VMware Spring Ai

## Identifiers

- CVE-2026-40979
- GHSA-r5hp-3cgj-j6xv

## Related threats

- [Spring AI RedisChatMemoryRepository RediSearch injection in findByMetadata()](https://junglewise.ai/threats/cve-2026-59319-spring-ai-redischatmemoryrepository-redisearch-injection-in)
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- [Spring AI tool calling privilege escalation](https://junglewise.ai/threats/cve-2026-59318-spring-ai-tool-calling-privilege-escalation)
- [Spring AI Semantic Cache context hash isolation bypass](https://junglewise.ai/threats/cve-2026-59308-spring-ai-semantic-cache-context-hash-isolation-bypass)
- [Spring AI unbounded session accumulation denial of service](https://junglewise.ai/threats/cve-2026-59279-spring-ai-unbounded-session-accumulation-denial-of-service)