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sgl-project SGLang generate Endpoint io_struct.py denial of service

Type: advisorySources: OSV

A weakness has been identified in sgl-project SGLang up to 0.5.19. Affected by this vulnerability is an unknown functionality of the file python/sglang/srt/managers/io_struct.py of the component generate Endpoint. This manipulation of the argument session_params causes denial of service. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-110807
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 23:58 UTC · Revision 1

Source evidence

sgl-project SGLang generate Endpoint io_struct.py denial of service

core-osv · Original source

Published 14 Oct 2026, 23:00 UTC

A weakness has been identified in sgl-project SGLang up to 0.5.19. Affected by this vulnerability is an unknown functionality of the file python/sglang/srt/managers/io_struct.py of the component generate Endpoint. This manipulation of the argument session_params causes denial of service. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

osv:CVE-2026-110807
Complete source record
{
  "id": "9b4007067bc0a9c74d9b4e9f6a540931c9dc1f25b4cb5bda4d11093fd6b5961f",
  "url": "https://osv.dev/vulnerability/CVE-2026-110807",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "sgl-project SGLang generate Endpoint io_struct.py denial of service",
    "summary": "A weakness has been identified in sgl-project SGLang up to 0.5.19. Affected by this vulnerability is an unknown functionality of the file python/sglang/srt/managers/io_struct.py of the component generate Endpoint. This manipulation of the argument session_params causes denial of service. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:CVE-2026-110807",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-110807",
      "aliases": [
        "CVE-2026-110807"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sgl-project/sglang",
              "type": "GIT",
              "events": [
                {
                  "introduced": "97a38ee85ba62e268bde6388f1bf8edfe2ca9d76"
                },
                {
                  "last_affected": "0bcd822377da7b5718e674eaf9c870d349424dd1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.5.1"
                      },
                      {
                        "last_affected": "0.5.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.2"
                      },
                      {
                        "last_affected": "0.5.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.3"
                      },
                      {
                        "last_affected": "0.5.3"
                      }
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.4"
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                      {
                        "last_affected": "0.5.4"
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                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.5"
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                        "last_affected": "0.5.5"
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
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                  {
                    "range": [
                      {
                        "introduced": "0.5.6"
                      },
                      {
                        "last_affected": "0.5.6"
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.7"
                      },
                      {
                        "last_affected": "0.5.7"
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                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.8"
                      },
                      {
                        "last_affected": "0.5.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.9"
                      },
                      {
                        "last_affected": "0.5.9"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.10"
                      },
                      {
                        "last_affected": "0.5.10"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.11"
                      },
                      {
                        "last_affected": "0.5.11"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.12"
                      },
                      {
                        "last_affected": "0.5.12"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.13"
                      },
                      {
                        "last_affected": "0.5.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.14"
                      },
                      {
                        "last_affected": "0.5.14"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.15"
                      },
                      {
                        "last_affected": "0.5.15"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.16"
                      },
                      {
                        "last_affected": "0.5.16"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.17"
                      },
                      {
                        "last_affected": "0.5.17"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.18"
                      },
                      {
                        "last_affected": "0.5.18"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.5.19"
                      },
                      {
                        "last_affected": "0.5.19"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.5.19"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.5.1",
            "0.5.10",
            "0.5.11",
            "0.5.12",
            "0.5.13",
            "0.5.14",
            "0.5.15",
            "0.5.16",
            "0.5.17",
            "0.5.18",
            "0.5.19",
            "0.5.2",
            "0.5.3",
            "0.5.4",
            "0.5.5",
            "0.5.6",
            "0.5.7",
            "0.5.8",
            "0.5.9",
            "v0.5.19",
            "gateway-v0.3.1",
            "gateway-v0.3.0",
            "v0.5.6.post2",
            "gateway-v0.2.4",
            "v0.5.6.post1",
            "v0.5.6",
            "v0.5.5",
            "v0.5.5.post3",
            "gateway-v0.2.3",
            "v0.5.5.post2",
            "v0.5.5.post1",
            "v0.5.4.post3",
            "v0.5.4.post2",
            "gateway-v0.2.2",
            "v0.5.4.post1",
            "v0.5.4",
            "gateway-v0.2.1",
            "v0.5.3.post3",
            "v0.5.3.post2",
            "gateway-v0.2.0",
            "v0.5.3.post1",
            "v0.5.3",
            "v0.5.3rc2",
            "v0.5.3rc1",
            "v0.5.3rc0",
            "v0.5.2",
            "v0.5.2rc2",
            "v0.5.2rc1",
            "v0.5.2rc0",
            "v0.5.1.post3",
            "v0.5.1.post2",
            "v0.5.1.post1",
            "v0.5.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110807.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.366213634Z",
      "provider": "osv",
      "references": [
        "https://github.com/sgl-project/sglang/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110807.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-110807",
        "https://vuldb.com/cve/CVE-2026-110807",
        "https://vuldb.com/submit/1004351",
        "https://vuldb.com/vuln/420278",
        "https://github.com/sgl-project/sglang/issues/41467",
        "https://vuldb.com/vuln/420278/cti",
        "https://github.com/sgl-project/sglang/pull/41535",
        "https://gist.github.com/Yunzez/28820d220c52de4810fd5fb2d1dcf409#file-repro_sglang_session_params_crash-py"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-404"
        ],
        "cna_assigner": "VulDB",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0.5.0"
                  },
                  {
                    "last_affected": "0.5.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110807.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-110807",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491010,
  "published_at": "2026-10-14T23:00:19.976+00:00"
}