Sglang
CVE-2026-3989
HIGH
GHSA-hvwj-8w5g-28rg
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (cert) · only source for this CVE.
CVSS VectorVendor: cert
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
High severity vulnerability in SGLang. 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.
Technical ContextAI
Vulnerability Type: Deserialization of Untrusted Data (CWE-502) CVSS 3.1: 7.8/10.0 — Attack Vector: Local | Complexity: Low | Privileges Required: None | User Interaction: Required Source: https://github.com/sgl-project/sglang The vulnerability involves unsafe deserialization of untrusted input, which allows arbitrary code execution when an attacker supplies crafted serialized objects.
RemediationAI
Security advisories:
- https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities
Remote code execution in SGLang (versions up to and including 0.5.15) allows unauthenticated attackers to run arbitrary
SGLang's multimodal generation module deserializes untrusted data with pickle.loads() over an unauthenticated ZMQ broker
SGLang's encoder parallel disaggregation system is vulnerable to unauthenticated RCE through pickle deserialization in t
Unauthenticated remote code execution in SGLang (the LLM/multimodal generation serving runtime) affecting version 5.10 a
Remote code execution in SGLang 0.5.9's /v1/rerank endpoint allows unauthenticated attackers to execute arbitrary code b
Remote code execution in SGLang (versions up to and including 0.5.15) allows attackers to run arbitrary code on the infe
Remote code execution in SGLang (versions ≤ v0.5.15) allows attackers to achieve arbitrary code execution through the op
Unauthenticated remote code execution affects SGLang, an LLM/multimodal inference-serving framework, at version 5.10, wh
Unauthenticated remote code execution in SGLang (versions 0 through 0.5.14) arises when the expert-parallel backup subsy
Arbitrary file write in SGLang's multimodal generation runtime (version 5.10) allows a remote, unauthenticated attacker
SGLang versions up to and including v0.5.15 expose unauthenticated network endpoints that allow complete model weight ex
Unauthenticated credential leakage in SGLang's /server_info HTTP endpoint exposes configured API keys and SSL keyfile pa
Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today