CVE-2026-3989

Summary

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

Weaknesses

• CWE-502: Deserialization of Untrusted Data

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

References

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

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