Vulnerability-Lookup

GHSA-6M5F-673F-5VH7

Vulnerability from github – Published: 2026-05-03 00:31 – Updated: 2026-05-07 21:09

Summary

SGLang has an Improper Input Validation/Injection Issue

Details

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.

Severity ?

5.6 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

6.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "sglang"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.5.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-7669"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-74"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T21:09:28Z",
    "nvd_published_at": "2026-05-02T22:16:24Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-6m5f-673f-5vh7",
  "modified": "2026-05-07T21:09:29Z",
  "published": "2026-05-03T00:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7669"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gouldnicholas/CVE-2026-7669-PoC"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sgl-project/sglang"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/799263"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/360817"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/360817/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SGLang has an Improper Input Validation/Injection Issue"
}

CVE-2026-7669 (GCVE-0-2026-7669)

Vulnerability from cvelistv5 – Published: 2026-05-02 22:00 – Updated: 2026-05-05 00:31

Title

sgl-project SGLang HuggingFace Transformer hf_transformers_utils.py get_tokenizer code injection

Summary

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.

Severity ?

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

5.6 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

5.6 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

CWE

CWE-94 - Code Injection
CWE-74 - Injection

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/vuln/360817	vdb-entrytechnical-descriptionexploit
	https://vuldb.com/vuln/360817/cti	signaturepermissions-required
	https://vuldb.com/submit/799263	third-party-advisory
	https://github.com/gouldnicholas/CVE-2026-7669-PoC	exploit

Impacted products

	Vendor	Product	Version
	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

Credits

Nicholas Gould David Rochester ngould (VulDB User) ngould (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-7669",
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                  },
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                "role": "CISA Coordinator",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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GHSA-6M5F-673F-5VH7

CVE-2026-7669 (GCVE-0-2026-7669)

Tags

Sightings

Nomenclature