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4508 articles · 223853 vulns · 37/41 feeds (7d)
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9.8
CVE-2026-96276EXPLOITED
red hat · red hat enterprise linux

Flatpak: flatpak: arbitrary write in host context via flatpak build-init

Description

If a malicious SDK container declares an extension point with a crafted `directory` path, and a developer runs `flatpak build-init --writable-sdk --sdk-extension` with that SDK, attacker-chosen files could be written outside the working directory, since the target path is resolved via a function that allows `..` traversal.

Affected Products

VendorProductVersions
red hatred hat enterprise linux—

References

  • https://access.redhat.com/security/cve/CVE-2026-96276(vdb-entry, x_refsource_REDHAT)
  • https://bugzilla.redhat.com/show_bug.cgi?id=2539418(issue-tracking, x_refsource_REDHAT)
  • https://github.com/flatpak/flatpak/security/advisories/GHSA-8qxj-x646-phcm

Related News (1 articles)

Tier C
VulDB4d ago
CVE-2026-96276 | Red Hat Enterprise Linux 7/8/9/10 path traversal
→ No new info (linked only)

Discussion (0)

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CVSS 3.19.8 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA KEV❌ No
Actively exploited✅ Yes
CWECWE-22
PublishedSep 23, 2026
Tags
remote code executionfile manipulationdenial of servicemultiple vulnerabilities
Trending Score33
Source articles1
Independent1
Info Completeness0/14
Missing: cve_id, title, description, vendor, product, versions, cvss, epss, cwe, kev, exploit, patch, iocs, mitre_attack

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Related CVEs (5)

HIGHCVE-2026-96280EXP
Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems
Trending: 45
MEDIUMCVE-2026-96281EXP
Flatpak: flatpak: unprivileged active user can bypass anti-downgrade checks for system apps/runtimes
Trending: 41
LOWCVE-2026-96284EXP
Flatpak: flatpak: arbitrary read-access to files in the system-helper context via oci symlink following
Trending: 40
NONECVE-2026-97185EXP
Gimp: gimp: out-of-bounds write in gimpressionist plugin via crafted preset file
Trending: 36
NONECVE-2026-88924EXP
Gvfs: gvfs-admin socket ownership race permits local root
Trending: 35

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Sep 23, 2026
Discovered by ZDM
Sep 23, 2026
Actively Exploited
Sep 27, 2026
Exploit Available
Sep 27, 2026