CVE-2021-41133: flatpak flatpak

Affected products, as the CNA wrote them
Vendor	Product	Versions
flatpak	flatpak	affected >= 1.8.0, <= 1.8.2 affected >= 1.10.0, < 1.10.4 affected >= 1.11.0, < 1.12.0

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0044, the 38th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 8 Oct 2021. New records show when each source confirmed them.

Sources

CVE List: CVE-2021-41133
NVD: CVE-2021-41133

References from the CNA

github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q
github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999
github.com/flatpak/flatpak/commit/26b12484eb8a6219b9e7aa287b298a894b2f34ca
github.com/flatpak/flatpak/commit/462fca2c666e0cd2b60d6d2593a7216a83047aaf
github.com/flatpak/flatpak/commit/4c34815784e9ffda5733225c7d95824f96375e36
github.com/flatpak/flatpak/commit/89ae9fe74c6d445bb1b3a40e568d77cf5de47e48
github.com/flatpak/flatpak/commit/9766ee05b1425db397d2cf23afd24c7f6146a69f
github.com/flatpak/flatpak/commit/a10f52a7565c549612c92b8e736a6698a53db330
github.com/flatpak/flatpak/commit/e26ac7586c392b5eb35ff4609fe232c52523b2cf
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5656ONDP2MGKIJMKEC7N2NXCV27WGTC/ vendor-advisory
www.debian.org/security/2021/dsa-4984 vendor-advisory
www.openwall.com/lists/oss-security/2021/10/26/9 mailing-list
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5DKCYRC6MFSTFCUP4DELCOUUP3SFEFX/ vendor-advisory
security.gentoo.org/glsa/202312-12 vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.