CVE-2026-120859
PyMoDAQ before 5.3.10 Arbitrary Code Execution via Crafted HDF5, Dock Layout, and XML Settings Files
Description
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.
INFO
Published Date :
Nov. 5, 2026, 6:17 p.m.
Last Modified :
Nov. 5, 2026, 6:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-120859
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update PyMoDAQ to version 4.4.13 or later.
- Update pymodaq_data to version 5.1.15 or later.
- Update pymodaq_gui to version 5.1.15 or later.
- Update pymodaq_utils to version 5.1.15 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-120859.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-120859 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-120859
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-120859 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-120859 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Nov. 05, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-502 Added CWE CWE-95 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/120xxx/CVE-2026-120859.json">CVE-2026-120859</a> Added Reference https://github.com/PyMoDAQ/PyMoDAQ/blob/5.3.9/packages/pymodaq_data/src/pymodaq_data/h5modules/backends.py#L477-L478 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/commit/041e8a22b3dbe3c986ec0ea3c6b46a22f5efe374 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/commit/3bf9042a58f5d4870a2b45fe2c9423aafe6b9203 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/commit/6c7fff74d82624c640bd79513f5b4675ea6d88da Added Reference https://github.com/PyMoDAQ/PyMoDAQ/commit/ae0042513eb979c84da690825902658c625718d1 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/releases/tag/4.4.13 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.1.15 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.2.14 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/releases/tag/5.3.10 Added Reference https://github.com/PyMoDAQ/PyMoDAQ/security/advisories/GHSA-jw9g-5c9x-cf84 Added Reference https://www.vulncheck.com/advisories/pymodaq-before-5.3.10-arbitrary-code-execution-via-crafted-hdf5-dock-layout-and-xml-settings-files