Description
In RPyC before 6.0.0, when a server exposes a method that calls the attribute named __array__ for a client-provided netref (e.g., np.array(client_netref)), a remote attacker can craft a class that results in remote code execution.
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 | rpyc | 6.0.0-1 | — |
| Debian 13 | rpyc | 6.0.0-1 | — |
| Debian 12 | rpyc | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rpyc | No fix yet | — |
| Ubuntu 26.04 LTS | rpyc | No fix yet | — |
| Ubuntu 25.10 | rpyc | No fix yet | — |
| Ubuntu 24.04 LTS | rpyc | No fix yet | — |
| Ubuntu 22.04 LTS | rpyc | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | rpyc | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP5 | python-rpyc +1 | 4.1.5-bp155.3.3.1 | openSUSE-SU-2024:0082-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-rpyc | 6.0.2-1.5 | openSUSE-SU-2026:12040-1 |
| openSUSE Leap 15.5 | python-rpyc +1 | 4.1.5-bp155.3.3.1 | openSUSE-SU-2024:0082-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | rpyc | >= 4.0.0, < 6.0.0 | 6.0.0 | GHSA-h5cg-53g7-gqjw |
| PyPI | rpyc | < 6.0.0 | 6.0.0 | PYSEC-2024-44 |
Advisories 2
- openSUSE-SU-2026:12040-1 python313-rpyc-6.0.2-1.5 on GA media SUSE / openSUSE Security Updates · Oct 5, 2026
- openSUSE-SU-2024:0082-1 Security update for python-rpyc SUSE / openSUSE Security Updates · Feb 4, 2026