Is CVE-2026-88265 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-88265?

CVE-2026-88265 has a CVSS v3 severity of MEDIUM (5.6).

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CVE-2026-88265

Description

A flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.