CVE-2026-96775 MLflow dspy bypasses pickle deserialization control
Remote attackers can execute arbitrary code by bypassing pickle deserialization controls in MLflow's dspy flavor via crafted artifacts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-96775?
CVE-2026-96775 is a high-severity unsafe deserialization vulnerability in MLflow, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
MLflow's dspy flavor, versions >= 2.0, applies the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False security control only when the model_path ends in .pkl, which allows a remote attacker to execute arbitrary code via a crafted MLmodel artifact.
Weakness: CWE-502
Which versions are affected by CVE-2026-96775?
How do I fix CVE-2026-96775?
No fix has been published for CVE-2026-96775 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-96775 being exploited?
There is no known exploitation of CVE-2026-96775 in the wild and no public exploit code.
Sources
Also known as GHSA-q5f3-5gj6-hmj7.