AI agent vulnerability · SGLang

CVE-2026-7669: SGLang has an Improper Input Validation/Injection Issue

mediumCVSS 4.0 6.3 · 3.1 5.6GHSA-6m5f-673f-5vh7

A vulnerability was detected in sgl-project SGLang up to 0.5.9. Impacted is the function gettokenizer of the file python/sglang/srt/utils/hftransformersutils.py of the component HuggingFace Transformer Handler. The manipulation results in deserialization. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is considered difficult.

Published May 3, 2026 · Updated May 7, 2026

Affected packages

sglang

Ecosystem: PyPI
Affected: <= 0.5.9
Fixed in: No patched version yet
Check: pip show sglang

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

A vulnerability was detected in sgl-project SGLang up to 0.5.9. Impacted is the function get_tokenizer of the file python/sglang/srt/utils/hf_transformers_utils.py of the component HuggingFace Transformer Handler. The manipulation results in deserialization. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is considered difficult. The vendor was contacted early about this disclosure but did not respond in any way.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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