# DLA-4001-1: libxstream-java security update

DLA-4001-1, released December 21, 2024, fixes 1 CVE in libxstream-java (version 1.4.15-3+deb11u3). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dla-4001-1
- Platform: Linux
- Released: Dec 21, 2024
- Priority: High (Closes CVE-2021-43859, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2021-43859

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libxstream-java](https://patchblox.com/security/data/product/linux/libxstream-java.md) | Debian 11.6 (bullseye) | 1.4.15-3+deb11u3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-43859](https://patchblox.com/security/data/cve/CVE-2021-43859.md) | High | libxstream-java: libxstream-java - security update | 7.5 | 0.0793 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo