CVE-2026-106588

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{"bugzilla": {"description": "openssh: OpenSSH: Loss of process sandboxing via macOS SDK builds", "id": "2547206", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547206"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-653", "details": ["In sshd in OpenSSH through 10.6, use of the macOS 27 (or later) SDK has the side effect of loss of sandboxing, which is potentially unexpected.", "A flaw was found in OpenSSH. When built using certain macOS software development kits (SDKs), the SSH server daemon (sshd) disables process sandboxing due to the removal of underlying system interfaces. Consequently, the daemon runs without sandbox isolation, potentially allowing an attacker who compromises the service to access system resources that would normally be restricted."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-106588", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-06T21:10:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106588\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106588\nhttps://www.openssh.org/releasenotes.html#10.6"], "statement": "A flaw of low security impact was found in OpenSSH in the Red Hat Hardened Images (Hummingbird) context. When OpenSSH's sshd daemon is built using the macOS 27 (or later) SDK, the removal of the underlying macOS system interfaces causes the daemon to be built without its process sandbox. An sshd compiled in this way runs without sandbox isolation, so an attacker who compromises the daemon process could access system resources that the sandbox would normally restrict; this weakens defense in depth rather than directly exposing data or causing denial of service. Red Hat rates this flaw as low impact (CVSS 3.1 score 3.1, CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N), matching the upstream assessment. The loss of sandboxing only arises in builds compiled against macOS SDKs: Red Hat Hardened Images ships OpenSSH built as RPMs for Linux rather than against macOS SDKs, so the vulnerable build configuration is not present, and the Hummingbird affect is delegated with a not-affected resolution on that basis.", "threat_severity": "Low"}

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