Red Hat Security Advisory: flatpak security update
Two security vulnerabilities have been identified in Flatpak, a system for building, distributing, and running sandboxed desktop applications on Linux. The first vulnerability (CVE-2026-34078) allows arbitrary code execution via crafted symlinks in sandbox-expose options. The second vulnerability (CVE-2026-34079) permits arbitrary file deletion on the host due to improper cache file path validation. These issues affect Red Hat Enterprise Linux 9 and related distributions. Red Hat has issued a security advisory and released updated Flatpak packages to address these vulnerabilities.
AI Analysis
Technical Summary
Flatpak contains two security flaws: CVE-2026-34078 enables arbitrary code execution through crafted symbolic links in sandbox-expose options, and CVE-2026-34079 allows arbitrary file deletion on the host system due to improper validation of cache file paths. These vulnerabilities impact Red Hat Enterprise Linux 9 and its variants. Red Hat has published an important security advisory (RHSA-2026:21755) with updated Flatpak packages that fix these issues. The advisory includes detailed information and instructions for applying the update.
Potential Impact
Successful exploitation of CVE-2026-34078 could allow an attacker to execute arbitrary code within the Flatpak sandbox environment, potentially leading to privilege escalation or system compromise. CVE-2026-34079 could enable an attacker to delete arbitrary files on the host system, causing data loss or disruption. Both vulnerabilities pose significant risks to affected systems running Flatpak on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released updated Flatpak packages that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:21755 and the referenced article https://access.redhat.com/articles/11258. Applying this official fix mitigates the vulnerabilities. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: flatpak security update
Description
Two security vulnerabilities have been identified in Flatpak, a system for building, distributing, and running sandboxed desktop applications on Linux. The first vulnerability (CVE-2026-34078) allows arbitrary code execution via crafted symlinks in sandbox-expose options. The second vulnerability (CVE-2026-34079) permits arbitrary file deletion on the host due to improper cache file path validation. These issues affect Red Hat Enterprise Linux 9 and related distributions. Red Hat has issued a security advisory and released updated Flatpak packages to address these vulnerabilities.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Flatpak contains two security flaws: CVE-2026-34078 enables arbitrary code execution through crafted symbolic links in sandbox-expose options, and CVE-2026-34079 allows arbitrary file deletion on the host system due to improper validation of cache file paths. These vulnerabilities impact Red Hat Enterprise Linux 9 and its variants. Red Hat has published an important security advisory (RHSA-2026:21755) with updated Flatpak packages that fix these issues. The advisory includes detailed information and instructions for applying the update.
Potential Impact
Successful exploitation of CVE-2026-34078 could allow an attacker to execute arbitrary code within the Flatpak sandbox environment, potentially leading to privilege escalation or system compromise. CVE-2026-34079 could enable an attacker to delete arbitrary files on the host system, causing data loss or disruption. Both vulnerabilities pose significant risks to affected systems running Flatpak on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released updated Flatpak packages that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:21755 and the referenced article https://access.redhat.com/articles/11258. Applying this official fix mitigates the vulnerabilities. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:21755
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-34079"]
- Cvss Version
- null
Threat ID: 6a18be67e29bf47b503869cb
Added to database: 05/28/2026, 22:15:03 UTC
Last enriched: 07/07/2026, 00:51:32 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 52
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