CVE-2026-120859: PyMoDAQ PyMoDAQ

PyMoDAQ before 5.3.10 Arbitrary Code Execution via Crafted HDF5, Dock Layout, and XML Settings Files

CVSS 8.5 High

Published by the CVE Program (CNA: VulnCheck) at 5 Nov 2026, 17:14 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
PyMoDAQ	PyMoDAQ pkg:pypi/pymodaq	affected before 4.4.13 semver Other versions: unaffected
PyMoDAQ	pymodaq_data pkg:pypi/pymodaq-data	affected before 5.1.15 semver affected 5.2.0 to before 5.2.14 semver affected 5.3.0 to before 5.3.10 semver Other versions: unaffected
PyMoDAQ	pymodaq_gui pkg:pypi/pymodaq-gui	affected before 5.1.15 semver affected 5.2.0 to before 5.2.14 semver affected 5.3.0 to before 5.3.10 semver Other versions: unaffected
PyMoDAQ	pymodaq_utils pkg:pypi/pymodaq-utils	affected before 5.1.15 semver affected 5.2.0 to before 5.2.14 semver affected 5.3.0 to before 5.3.10 semver Other versions: unaffected

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.5	High	4.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
7.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS No score.

Timeline

5 Nov 2026, 17:14 UTC Confirmed by the CVE List
5 Nov 2026, 17:29 UTC First seen by agentprime
5 Nov 2026, 18:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/PyMoDAQ/PyMoDAQ/security/advisories/GHSA-jw9g-5c9x-cf84 vendor-advisory
github.com/PyMoDAQ/PyMoDAQ/commit/6c7fff74d82624c640bd79513f5b4675ea6d88da patch
github.com/PyMoDAQ/PyMoDAQ/commit/3bf9042a58f5d4870a2b45fe2c9423aafe6b9203 patch
github.com/PyMoDAQ/PyMoDAQ/commit/ae0042513eb979c84da690825902658c625718d1 patch
github.com/PyMoDAQ/PyMoDAQ/commit/041e8a22b3dbe3c986ec0ea3c6b46a22f5efe374 patch
github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.3.10 release-notes
github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.2.14 release-notes
github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.1.15 release-notes
github.com/PyMoDAQ/PyMoDAQ/releases/tag/4.4.13 release-notes
github.com/PyMoDAQ/PyMoDAQ/blob/5.3.9/packages/pymodaq_data/src/pymodaq_data/h5modules/backends.py#L477-L478 technical-description
www.vulncheck.com/advisories/pymodaq-before-5.3.10-arbitrary-code-execution-via-crafted-hdf5-dock-layout-and-xml-settings-files third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.