Vulnerability-Lookup

CVE-2026-90919 (GCVE-0-2026-90919)

Vulnerability from cvelistv5 – Published: 2026-09-14 11:30 – Updated: 2026-09-14 14:24

Title

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Config Server Pickle Deserialization

Summary

LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.

Severity

9.3 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 14:24 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/ModelTC/LightLLM/issues/1563	issue-tracking
https://github.com/ModelTC/LightLLM/blob/v1.2.0/l…	technical-description
https://github.com/ModelTC/lightllm	product
https://www.vulncheck.com/advisories/lightllm-thr…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
ModelTC	LightLLM	Affected: 0 , ≤ 1.2.0 (semver)	guessed

Date Public

2026-09-10 00:00

Credits

Jiapeng Li Jiajia Liu

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-90919

Vulnerability from fkie_nvd - Published: 2026-09-14 12:17 - Updated: 2026-09-14 15:17

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/ModelTC/LightLLM/blob/v1.2.0/lightllm/server/config_server/api_http.py#L79-L86
	disclosure@vulncheck.com	https://github.com/ModelTC/LightLLM/issues/1563
	disclosure@vulncheck.com	https://github.com/ModelTC/lightllm
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code-execution-via-config-server-pickle-deserialization
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/ModelTC/LightLLM/issues/1563

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-6QPH-W2VP-JM84

Vulnerability from github – Published: 2026-09-14 12:31 – Updated: 2026-09-14 12:31

Details

LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a reduce method to execute arbitrary code with Config Server process privileges.

Severity

9.8 (Critical)


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

9.3 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90919"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T12:17:51Z",
    "severity": "CRITICAL"
  },
  "details": "LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server\u0027s unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.",
  "id": "GHSA-6qph-w2vp-jm84",
  "modified": "2026-09-14T12:31:41Z",
  "published": "2026-09-14T12:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90919"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ModelTC/LightLLM/issues/1563"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ModelTC/LightLLM/blob/v1.2.0/lightllm/server/config_server/api_http.py#L79-L86"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ModelTC/lightllm"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code-execution-via-config-server-pickle-deserialization"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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.
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-90919 (GCVE-0-2026-90919)

FKIE_CVE-2026-90919

GHSA-6QPH-W2VP-JM84

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Sightings

Nomenclature

Related by attack behaviour