Description (CNA)
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 of the argument trust_remote_code with the input False as part of Boolean results in code injection. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is considered difficult. In get_tokenizer(), when the caller passes trust_remote_code=False and HuggingFace transformers v5 returns a TokenizersBackend instance (the generic fallback for tokenizer classes not in the registry), SGLang silently re-invokes AutoTokenizer.from_pretrained with trust_remote_code=True, overriding the caller's explicit security setting. A model repository containing a malicious tokenizer.py referenced via auto_map in tokenizer_config.json will execute arbitrary Python in the SGLang process during this second call. No log line or warning is emitted. The override affects all current SGLang versions because transformers==5.3.0 is pinned in pyproject.toml. Both tokenizer_mode="auto" and tokenizer_mode="slow" are affected. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| sgl-project / SGLang | affected 0.5.0; affected 0.5.1; affected 0.5.2; affected 0.5.3; affected 0.5.4; affected 0.5.5; affected 0.5.6; affected 0.5.7; affected 0.5.8; affected 0.5.9 |
CWE
CWE-94, CWE-74
References
- https://vuldb.com/vuln/360817
- https://vuldb.com/vuln/360817/cti
- https://vuldb.com/submit/799263
- https://github.com/gouldnicholas/CVE-2026-7669-PoC
ADP enrichment
No English description supplied.
No references supplied.