# CVE-2023-2976: guava-libraries: Use of Java's default temporary directory for file creation in `FileBackedOutputStream` in Google Guava versions 1.0...

CVE-2023-2976 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2023-2976, released June 14, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-2976
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 14, 2023

## Description

Use of Java's default temporary directory for file creation in `FileBackedOutputStream` in Google Guava versions 1.0 to 31.1 on Unix systems and Android Ice Cream Sandwich allows other users and apps on the machine with access to the default Java temporary directory to be able to access the files created by the class.  Even though the security vulnerability is fixed in version 32.0.0, we recommend using version 32.0.1 as version 32.0.0 breaks some functionality under Windows.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | guava amzn 2023 | 31.0.1-3.amzn2023.0.6 | [ALAS2023-2023-458](https://patchblox.com/security/data/fix/linux/alas2023-2023-458.md) | Dec 6, 2023 |
| Linux | guava-javadoc amzn 2023 | 31.0.1-3.amzn2023.0.6 | [ALAS2023-2023-458](https://patchblox.com/security/data/fix/linux/alas2023-2023-458.md) | Dec 6, 2023 |
| Linux | guava-libraries Debian 13.5 (trixie) | 32.0.1-1 | [DEBIAN-CVE-2023-2976](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2976.md) | Jun 14, 2023 |
| Linux | guava-libraries Debian 14 | 32.0.1-1 | [DEBIAN-CVE-2023-2976](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2976.md) | Jun 14, 2023 |
| Linux | guava-testlib amzn 2023 | 31.0.1-3.amzn2023.0.6 | [ALAS2023-2023-458](https://patchblox.com/security/data/fix/linux/alas2023-2023-458.md) | Dec 6, 2023 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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