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

Advisory record · `GHSA-r5hp-3cgj-j6xv`

- **Identifiers:** `GHSA-r5hp-3cgj-j6xv` · `CVE-2026-40979`
- **State:** Confirmed
- **Severity:** CVSS 6.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-377](https://cwe.mitre.org/data/definitions/377.html)
- **Tags:** [CWE-377](https://agentprime.io/advisories/tag/cwe-377.md)
- **Published:** 28 Apr 2026
- **Updated:** 6 May 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 28 Apr 2026, 09:34 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.springframework.ai:spring-ai-transformers` (Maven): affected `>=1.0.0, <1.0.6 || >=1.1.0, <1.1.5`; fixed in `1.0.6`, `1.1.5`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Spring AI's spring-ai-transformers versions 1.0.0 through 1.0.5 and 1.1.0 through 1.1.4 cache the ONNX model in a predictable, world-writable temporary directory. An attacker with access to a shared environment can reach the ONNX model used by the application. Upgrade to spring-ai-transformers 1.0.6 or 1.1.5.

Written 3 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.1 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N`, from CNA (vmware)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0010, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-r5hp-3cgj-j6xv)

## Sources

- [GitHub Advisory Database: GHSA-r5hp-3cgj-j6xv](https://github.com/advisories/GHSA-r5hp-3cgj-j6xv)
- [OSV: GHSA-r5hp-3cgj-j6xv](https://osv.dev/vulnerability/GHSA-r5hp-3cgj-j6xv)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-40979>
- <https://github.com/spring-projects/spring-ai>
- <https://spring.io/security/cve-2026-40979>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-r5hp-3cgj-j6xv>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-r5hp-3cgj-j6xv/>. Everything for agents: <https://agentprime.io/llms.txt>.