Description
Use of unsafe yaml load. Allows instantiation of arbitrary objects. The flaw itself is caused by an unsafe parsing of YAML values which happens whenever an action message is processed to be sent, and allows for the creation of Python objects. Through this flaw in the ROS core package of actionlib, an attacker with local or remote access can make the ROS Master, execute arbitrary code in Python form. Consider yaml.safe_load() instead. Located first in actionlib/tools/library.py:132. See links for more info on the bug.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Open Robotics | ros | ROS Melodic Morenia and prior distros | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ros-actionlib | 1.13.1-4 | — |
| Debian 13 | ros-actionlib | 1.13.1-4 | — |
| Debian 12 | ros-actionlib | 1.13.1-4 | — |
| Debian 9 | ros-actionlib | 1.11.7-1+deb9u1 | DLA-2357-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ros-actionlib | No fix yet | — |
| Ubuntu 18.04 LTS | ros-actionlib | No fix yet | — |
| Ubuntu 16.04 LTS | ros-actionlib | No fix yet | — |
Advisories 1
- DLA-2357-1 ros-actionlib - security update Debian Security (DSA / DLA) · Mar 9, 2026