Docker vulnerabilities
Summary
It was discovered that BuildKit, contained within Docker, incorrectly handled file path validation when processing frontend API messages. An attacker could possibly use this issue to write files outside of the intended state directory. (CVE-2026-33747) It was discovered that BuildKit, contained within Docker, incorrectly validated the subdir component of Git URL fragments. An attacker could possibly use this issue to access files outside of the checked-out repository root. (CVE-2026-33748) Affected Ubuntu releases: 26.04, 24.04, 22.04, 20.04. CVEs: CVE-2026-33748, CVE-2026-33747.
- Ubuntu 26.04
- Ubuntu 24.04
- Ubuntu 22.04
- Ubuntu 20.04
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
- Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
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