CVE-2026-97027
Flatpak: flatpak: denial of service via unsanitized keys in exported desktop entry / d-bus service files
- 3.6LowCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Flatpak passes through arbitrary vendor-extension keys unmodified when exporting an application's Desktop Entry (.desktop) and D-Bus Service (.service) files, instead of validating against an allowlist. A malicious Flatpak app can use this to cause denial of service (e.g. forced application restart loops) or to influence host D-Bus/systemd activation behavior beyond what the sandbox is intended to permit.
Timeline
ID reserved
By redhat
- 5 days later
· 5 days later
Published
- 39 days later
· 39 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Low3.6 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L |
| NVDNVD · Awaiting Analysis | 3.1 | Low3.6 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.6.
Affected products
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 7
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
What to do
Workaround: Only install applications from trusted sources.
References
References3
- https://access.redhat.com/security/cve/CVE-2026-97027 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2542683 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://github.com/flatpak/flatpak/security/advisories/GHSA-v64f-hrwr-j4vh (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-88554 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-97027)Record last updated .