CVE-2026-92162Flatpak vulnerable to path traversal via unvalidated "arch" parameter in DeployAppstream
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Prior to version 1.18.1, on systems where at least one OCI remote is configured (most common on Fedora systems), a malicious local user in an active local session could use a crafted architecture name to trick the `flatpak-system-helper` process into creating a root-owned directory tree with contents determined by the OCI remote, plus a root-owned `lock` file and `icons` directory, outside the intended root directory. If this vulnerability is combined with other vulnerabilities also fixed in 1.18.1, the combination can lead to local root privilege escalation. This particular vulnerability is not believed to be exploitable if there are no OCI remotes configured (common on non-Fedora systems). Version 1.18.1 patches the issue.
- CVSS
- 7.2 HIGH (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 20, 2026
- First seen by InfoSec Signals
- Oct 20, 2026
Affected products
flatpak flatpak flatpak:flatpak (from the name) | before 1.18.1 | CNA record |
References
- https://github.com/flatpak/flatpak/security/advisories/GHSA-v2gw-v9h5-9q4xx-refsource-confirm
- https://github.com/flatpak/flatpak/pull/6768x-refsource-misc
- https://github.com/flatpak/flatpak/commit/01773f84021dd090b2426f79675f94f2564f9279x-refsource-misc
- https://github.com/flatpak/flatpak/commit/19456b916842b079af833a86b9ab89c5db154b92x-refsource-misc
- https://github.com/flatpak/flatpak/commit/aeb369a2723506fabc1f701ef7a0dc6c97c4b983x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.