RCE in Pymodaq
CVE-2026-120859
PyMoDAQ before 4.4.13, and pymodaq_data, pymodaq_gui, and pymodaq_utils before 5.1.15, 5.2.x before 5.2.14, and 5.3.x before 5.3.10, contain deserialization of untrusted data and eval injection vulnerabilities that allow attackers to execute arbitrary code by supplying crafted files that a user opens. Attackers can store pickled objects in HDF5 string nodes that StringARRAY.array_to_string() passes to pickle.loads() when the node is browsed or read, place Python expressions in HDF5 attributes that JsonConverter.json2object() evaluates, supply a .dock file that load_layout_state() unpickles from the Dashboard Load layout action, or embed Python expressions in XML settings files that elt_to_dict() and set_txt_from_elt() evaluate.
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/PyMoDAQ/PyMoDAQ/blob/5.3.9/packages/pymodaq_data/src/pymodaq_data/h5… (technical-description)
- github.com/PyMoDAQ/PyMoDAQ/commit/041e8a22b3dbe3c986ec0ea3c6b46a22f5efe374 (patch)
- github.com/PyMoDAQ/PyMoDAQ/commit/3bf9042a58f5d4870a2b45fe2c9423aafe6b9203 (patch)
- github.com/PyMoDAQ/PyMoDAQ/commit/6c7fff74d82624c640bd79513f5b4675ea6d88da (patch)
- github.com/PyMoDAQ/PyMoDAQ/commit/ae0042513eb979c84da690825902658c625718d1 (patch)
- PyMoDAQ 4.4.13 Release Notes (release-notes)
- PyMoDAQ 5.1.15 Release Notes (release-notes)
- PyMoDAQ 5.2.14 Release Notes (release-notes)
- PyMoDAQ 5.3.10 Release Notes (release-notes)
- GitHub Security Advisory (GHSA-jw9g-5c9x-cf84) (vendor-advisory)
Frequently asked questions
- What is CVE-2026-120859?
- CVE-2026-120859 is a high-severity vulnerability in Pymodaq, classified under Eval Injection. CVSS score: 7.8/10. Published 2026-11-05.
- How severe is CVE-2026-120859?
- High severity. CVSS v3 base score is 7.8 out of 10.