rpc.py vulnerable to Deserialization of Untrusted Data
rpc.py through 0.6.0 allows Remote Code Execution because an unpickle occurs when the "serializer: pickle" HTTP header is sent. In other words, although JSON (not Pickle) is the default data format, an unauthenticated client can cause the data to be processed with unpickle.
Per the maintainer, rpc.py is not designed for an API that is open to the outside world, and external requests cannot reach rpc.py in real world use.
A fix exists on the master branch. As a workaround, use the following code to turn off pickle in older versions:
del SERIALIZER_NAMES[PickleSerializer.name]
del SERIALIZER_TYPES[PickleSerializer.content_type]Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | rpc-py | >= 0.4.2, <= 0.6.0 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-35411
- https://github.com/abersheeran/rpc.py/issues/22
- https://github.com/abersheeran/rpc.py/commit/491e7a841ed9a754796d6ab047a9fb16e23bf8bd
- https://github.com/abersheeran/rpc.py
- https://github.com/ehtec/rpcpy-exploit
- https://medium.com/%40elias.hohl/remote-code-execution-0-day-in-rpc-py-709c76690c30
- https://medium.com/@elias.hohl/remote-code-execution-0-day-in-rpc-py-709c76690c30
- http://packetstormsecurity.com/files/167872/rpc.py-0.6.0-Remote-Code-Execution.html
- https://pypi.org/project/rpc-py
- https://github.com/advisories/GHSA-8rq8-f485-7v8x
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502, CWE-522- Platform
- Python (PyPI)
- Package
rpc-py- Disclosed
- 09.07.2022
- Updated
- 11.10.2026 13:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8rq8-f485-7v8x - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-526 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: rpc-py
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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