What’s Vulnerable › Vulnerabilities

CVE-2026-3989: CVE-2026-3989

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-12 · updated 2026-08-10
• Weakness: CWE-502

Description

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 products

• SGLang: before 0.5.10 — fixed in 0.5.10

How to fix

Upgrade to a fixed version: SGLang 0.5.10. Check the vendor advisory for mitigations.

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/

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