In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes…
Priority MEDIUM 47CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a remote procedure call that executes code for an RPyC service with default configuration settings.
Why it matters now
EPSS 0.13049 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed rpyc (PyPI): 4.1.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | rpyc (PyPI) | 4.1.0 to before 4.1.1 | 4.1.1 | Patch available | GHSA-pj4g-4488-wmxm |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- rpyc (PyPI) Vendor— Affected 4.1.0 to before 4.1.1 Fixed in 4.1.1 Patch available GHSA-pj4g-4488-wmxm
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rpyc_project:rpyc:*:*:*:*:*:*:*:* | 4.1.0 – 4.1.1 | Vulnerable | Rpyc Project |
- cpe:2.3:a:rpyc_project:rpyc:*:*:*:*:*:*:*:* Versions 4.1.0 – 4.1.1 Vulnerable ·Rpyc Project
Remediation
- Fix · GHSA-pj4g-4488-wmxm rpyc (PyPI) Fixed in 4.1.1 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16328
- 2026-10-03 Alias added: GHSA-pj4g-4488-wmxm
References
Advisory 4
Sources
- CVE-2019-16328 · CVE Program
- CVE-2019-16328 · NVD
- FIRST EPSS
- GHSA-pj4g-4488-wmxm · GitHub Advisory Database · CC BY 4.0
- CVE-2019-16328 · Red Hat security data · CC BY 4.0
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