# python3-flask security updates

Patch Radar has 7 security fixes for python3-flask, closing 4 CVEs. The newest is python3-flask 1.1.1-2ubuntu0.1+esm1 (1.1.1-2ubuntu0.1+esm1), released February 20, 2026.

- Web page: https://patchblox.com/security/product/linux/python3-flask
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [python3-flask 1.1.1-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-flask-1.1.1-2ubuntu0.1-esm1.md) | Feb 20, 2026 | Ubuntu 20.04 LTS (focal) 1.1.1-2ubuntu0.1+esm1 | Routine | 1 | 0 |
| [python3-flask 2.0.1-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-flask-2.0.1-2ubuntu1.2.md) | Feb 20, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.0.1-2ubuntu1.2 | Routine | 1 | 0 |
| [python3-flask 3.0.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-flask-3.0.2-1ubuntu1.1.md) | Feb 20, 2026 | Ubuntu 24.04.5 LTS (noble) 3.0.2-1ubuntu1.1 | Routine | 1 | 0 |
| [python3-flask 3.1.0-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-flask-3.1.0-2ubuntu1.1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 3.1.0-2ubuntu1.1 | Routine | 1 | 0 |
| [python3-flask 1.1.1-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-flask-1.1.1-2ubuntu0.1.md) | May 2, 2023 | Ubuntu 20.04 LTS (focal) 1.1.1-2ubuntu0.1 | High | 1 | 0 |
| [python3-flask 2.0.1-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-flask-2.0.1-2ubuntu1.1.md) | May 2, 2023 | Ubuntu 22.04.1 LTS (jammy) 2.0.1-2ubuntu1.1 | High | 1 | 0 |
| [python3-flask 0.12.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-flask-0.12.2-3ubuntu0.1.md) | Aug 20, 2018 | Ubuntu 18.04.6 LTS (bionic) 0.12.2-3ubuntu0.1 | Routine | 1 | 0 |

---

Data as of 2026-11-07T00:32:44Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo