# libprotobuf-c1 security updates

Patch Radar has 4 security fixes for libprotobuf-c1, closing 1 CVE. The newest is libprotobuf-c1 1.4.1-1ubuntu1 (1.4.1-1ubuntu1), released January 16, 2026.

- Web page: https://patchblox.com/security/product/linux/libprotobuf-c1
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [libprotobuf-c1 1.4.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libprotobuf-c1-1.4.1-1ubuntu1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 1.4.1-1ubuntu1 | Routine | 1 | 0 |
| [libprotobuf-c1 1.4.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libprotobuf-c1-1.4.1-1ubuntu1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 1.4.1-1ubuntu1 | Routine | 1 | 0 |
| [libprotobuf-c1 1.3.3-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libprotobuf-c1-1.3.3-1ubuntu0.1.md) | Jun 23, 2022 | Ubuntu 20.04 LTS (focal) 1.3.3-1ubuntu0.1 | Routine | 1 | 0 |
| [libprotobuf-c1 1.3.3-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libprotobuf-c1-1.3.3-1ubuntu2.1.md) | Jun 23, 2022 | Ubuntu 22.04.1 LTS (jammy) 1.3.3-1ubuntu2.1 | Routine | 1 | 0 |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo