# CVE-2021-41133: flatpak: ELSA-2021-4042: flatpak security update (IMPORTANT)

CVE-2021-41133 is fixed in 7 products on 1 platform, first by flatpak 1.0.9-0ubuntu0.4, released October 8, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-41133
- Priority: High
- CVSS: 8.8 (IMPORTANT)
- EPSS: 0.0044
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 8, 2021

## Description

ELSA-2021-4042: flatpak security update (IMPORTANT)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | flatpak RHEL 8 | 0:1.8.5-4.el8_4 | [RHSA-2021:4042](https://patchblox.com/security/data/fix/linux/rhsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak Ubuntu 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4 | [flatpak 1.0.9-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-flatpak-1.0.9-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | flatpak Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.4 | [flatpak 1.6.5-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-flatpak-1.6.5-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | flatpak ol 8 | 0:1.8.5-4.el8_4 | [ELSA-2021-4042](https://patchblox.com/security/data/fix/linux/elsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-libs RHEL 8 | 0:1.8.5-4.el8_4 | [RHSA-2021:4042](https://patchblox.com/security/data/fix/linux/rhsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-libs ol 8 | 0:1.8.5-4.el8_4 | [ELSA-2021-4042](https://patchblox.com/security/data/fix/linux/elsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-selinux RHEL 8 | 0:1.8.5-4.el8_4 | [RHSA-2021:4042](https://patchblox.com/security/data/fix/linux/rhsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-selinux ol 8 | 0:1.8.5-4.el8_4 | [ELSA-2021-4042](https://patchblox.com/security/data/fix/linux/elsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-session-helper RHEL 8 | 0:1.8.5-4.el8_4 | [RHSA-2021:4042](https://patchblox.com/security/data/fix/linux/rhsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-session-helper ol 8 | 0:1.8.5-4.el8_4 | [ELSA-2021-4042](https://patchblox.com/security/data/fix/linux/elsa-2021-4042.md) | Nov 1, 2021 |
| Linux | flatpak-tests Ubuntu 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4 | [flatpak-tests 1.0.9-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-flatpak-tests-1.0.9-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | flatpak-tests Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.4 | [flatpak-tests 1.6.5-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-flatpak-tests-1.6.5-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | gir1.2-flatpak-1.0 Ubuntu 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4 | [gir1.2-flatpak-1.0 1.0.9-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-flatpak-1.0-1.0.9-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | gir1.2-flatpak-1.0 Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.4 | [gir1.2-flatpak-1.0 1.6.5-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-flatpak-1.0-1.6.5-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | libflatpak0 Ubuntu 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4 | [libflatpak0 1.0.9-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libflatpak0-1.0.9-0ubuntu0.4.md) | Oct 8, 2021 |
| Linux | libflatpak0 Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.4 | [libflatpak0 1.6.5-0ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libflatpak0-1.6.5-0ubuntu0.4.md) | Oct 8, 2021 |

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Data as of 2026-11-12T01:51:14Z 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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