CVE-2026-100843 — Project-MONAI

1. Detect

   Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`). Because remote code execution targets the running service rather than your application code, O3 also flags the exploit behaviour from runtime telemetry and egress traffic.

2. Remediation status

   No fixed release is recorded for CVE-2026-100843 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

3. Mitigate without a patch

   Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade. O3's runtime protection blocks the deserialization of untrusted data flaw at execution, which holds the line on hosts you cannot patch immediately.

4. How O3 protects you

   O3 detects and blocks CVE-2026-100843 exploitation at runtime with eBPF exploit-chain detection, plus L7 egress monitoring that catches a post-exploitation callback and cuts the attacker's outbound channel.

Tailored to CVE-2026-100843. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.