Security advisory

{
  "id": "6fa69d6a3b2fa8e9b850b0d37c1d2922bae7b91d919542edd2213654e30133ad",
  "url": "https://osv.dev/vulnerability/CVE-2025-60455",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-60455",
    "summary": "Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the \"--experimental-enable-kvcache-agent\" feature is used allowing attackers to execute arbitrary code.",
    "evidence": "osv:CVE-2025-60455",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-60455",
      "aliases": [
        "CVE-2025-60455",
        "GHSA-7xcv-9j6c-2fmc",
        "PYSEC-2025-253",
        "PYSEC-2026-427"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/modular/modular",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f2f9aa604e175a65407235704bbe52ddf9df038b"
                },
                {
                  "fixed": "10620059fb5c47fb0c30e5d21a8ff3b8d622fba4"
                },
                {
                  "fixed": "b20e749fa892dbe772e890a268002f732164d9f5"
                },
                {
                  "fixed": "ee9c4ab02345dd30bed8b79771b6909ff1b930a1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:modular:max:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "25.6.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "10620059fb5c47fb0c30e5d21a8ff3b8d622fba4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b20e749fa892dbe772e890a268002f732164d9f5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ee9c4ab02345dd30bed8b79771b6909ff1b930a1"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-60455.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.282959051Z",
      "provider": "osv",
      "references": [
        "https://github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py#L220",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/60xxx/CVE-2025-60455.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-60455",
        "https://github.com/modular/modular/issues/4795",
        "https://github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4",
        "https://github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5",
        "https://github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1",
        "https://www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities-across-the-ai-ecosystem"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/60xxx/CVE-2025-60455.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-60455",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493727,
  "published_at": "2025-11-18T00:00:00+00:00"
}