CVE-2026-3989

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.

Score

CVSS 3.1 7.8 High

Status

Analyzed - cret@cert.org

Published

2026-03-12

Last modified

2026-04-07

Weaknesses

CWE-502

Affected products

• Sglang (Lmsys)
• Sglang (Sglang)

References

• https://github.com/sgl-project/sglang/blob/main/scripts/playground/replay_request_dump.py
• https://github.com/sgl-project/sglang/pull/20904
• https://github.com/sgl-project/sglang/releases/tag/v0.5.10
• https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities/