SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket
SGLang's multimodal generation runtime scheduler's ROUTER socket binds to 0.0.0.0 by default and contains a sink that calls pickle.loads() on incoming messages, enabling RCE when exposed to the internet.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | sglang | >= 0.5.5, <= 0.5.12 | no fix |
References
- 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- Platform
- Python (PyPI)
- Package
sglang- Disclosed
- 18.05.2026
- Updated
- 11.10.2026 13:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-gwv6-pq6m-p3rq - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-536 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: sglang
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 09.2025 06.2026
- Without a fix
- 6
- Exploited in attacks
- 0
Severity breakdown
- Critical 5
- High 1
- Medium 2
- Low 2
Disclosures per year
- 2025: 1
- 2026: 9
-
SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket this entry
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