SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization
SGLangs replay_request_dump.py contains an insecure pickle.load() without validation and proper deserialization. An attacker can take advantage of this by providing a malicious .pkl file, which will execute the attackers code on the device running the script.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | sglang | < 0.5.10 | 0.5.10 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-3989
- https://github.com/sgl-project/sglang/pull/20904
- https://github.com/sgl-project/sglang
- https://github.com/sgl-project/sglang/blob/main/scripts/playground/replay_request_dump.py
- https://github.com/sgl-project/sglang/releases/tag/v0.5.10
- https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities
- https://pypi.org/project/sglang
- https://github.com/advisories/GHSA-hvwj-8w5g-28rg
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Python (PyPI)
- Package
sglang- Disclosed
- 12.03.2026
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3063 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-hvwj-8w5g-28rg - 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
-
SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization this entry
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