semgrep — security advisory

{
  "id": "12270e951dd2afefdf7b0349df7169fa695125a90350ee15b8e5fe8f2b7c8059",
  "url": "https://osv.dev/vulnerability/CGA-x3x9-26v7-f53x",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CGA-x3x9-26v7-f53x",
    "summary": "CGA-x3x9-26v7-f53x",
    "evidence": "osv:CGA-x3x9-26v7-f53x",
    "products": [
      {
        "name": {
          "value": "semgrep",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.181.0-r4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "semgrep",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.181.0-r4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CGA-x3x9-26v7-f53x",
      "aliases": [
        "CGA-x3x9-26v7-f53x"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.181.0-r4"
                }
              ]
            }
          ],
          "package": {
            "name": "semgrep",
            "purl": "pkg:apk/chainguard/semgrep?arch=x86_64",
            "ecosystem": "Chainguard"
          },
          "database_specific": {
            "source": "https://advisories.cgr.dev/chainguard/v3/osv/CGA-x3x9-26v7-f53x.json",
            "chainguard": {
              "applies_to_subpackages": false
            }
          },
          "ecosystem_specific": {
            "components": [
              {
                "component_name": "mcp",
                "component_purl": "pkg:pypi/mcp@1.28.1",
                "component_type": "python",
                "component_version": "1.28.1",
                "component_location": "/opt/chainguard/semgrep/lib/python3.13/site-packages/mcp-1.28.1.dist-info/METADATA",
                "latest_event_status": "fixed",
                "latest_event_timestamp": "2026-10-19T17:39:37Z"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.181.0-r4"
                }
              ]
            }
          ],
          "package": {
            "name": "semgrep",
            "purl": "pkg:apk/wolfi/semgrep?arch=x86_64",
            "ecosystem": "Wolfi"
          },
          "database_specific": {
            "source": "https://advisories.cgr.dev/chainguard/v3/osv/CGA-x3x9-26v7-f53x.json",
            "chainguard": {
              "applies_to_subpackages": false
            }
          },
          "ecosystem_specific": {
            "components": [
              {
                "component_name": "mcp",
                "component_purl": "pkg:pypi/mcp@1.28.1",
                "component_type": "python",
                "component_version": "1.28.1",
                "component_location": "/opt/chainguard/semgrep/lib/python3.13/site-packages/mcp-1.28.1.dist-info/METADATA",
                "latest_event_status": "fixed",
                "latest_event_timestamp": "2026-10-19T17:39:37Z"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-19T21:31:47.889938322Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-59951",
        "GHSA-84m7-p3x7-pcfv"
      ],
      "references": [
        "https://github.com/modelcontextprotocol/python-sdk/releases/tag/v1.30.0",
        "https://github.com/modelcontextprotocol/python-sdk/releases/tag/v2.2.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59951.json",
        "https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-84m7-p3x7-pcfv",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-59951",
        "https://github.com/modelcontextprotocol/python-sdk/commit/92120b4b0f50385af096592d7cee932fc1d994e7",
        "https://github.com/modelcontextprotocol/python-sdk/commit/d2290ca3434731b68ea3e2270bc06a6e6575931b",
        "https://github.com/modelcontextprotocol/python-sdk/pull/3395",
        "https://github.com/modelcontextprotocol/python-sdk/pull/3426"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-59951",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 376669,
  "published_at": "2026-10-16T14:02:59+00:00"
}