Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()

{
  "id": "b4e638c535b8bf2bfde634d9992e6e2559f3afb5ae639acd68b4f24d14fff9da",
  "url": "https://osv.dev/vulnerability/CVE-2026-22188",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()",
    "summary": "The deploy-stub component in Panda3D versions up to and including 1.10.16 contains a denial of service vulnerability due to unbounded stack allocation. The deploy-stub executable allocates argv_copy and argv_copy2 using alloca() based directly on the attacker-controlled argc value without validation. Supplying a large number of command-line arguments can exhaust stack space and propagate uninitialized stack memory into Python interpreter initialization, resulting in a reliable crash and undefined behavior.",
    "evidence": "osv:CVE-2026-22188",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-22188",
      "aliases": [
        "CVE-2026-22188"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/panda3d/panda3d",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "e560eb8da370d86b096d6cb65eafd9ab40879b9a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.10.16"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:cmu:panda3d:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.10.16"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.10.16",
            "v1.10.15",
            "v1.10.14",
            "v1.10.13",
            "v1.10.12",
            "v1.10.11",
            "v1.10.10",
            "v1.10.9",
            "v1.10.8",
            "v1.10.7",
            "v1.10.6",
            "v1.10.5",
            "v1.10.4.1",
            "v1.10.4",
            "v1.10.3",
            "v1.10.2",
            "v1.10.1",
            "v1.10.0",
            "v1.9.0",
            "v1.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22188.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.625860934Z",
      "provider": "osv",
      "references": [
        "https://www.panda3d.org/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22188.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-22188",
        "https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-unbounded-alloca",
        "https://github.com/panda3d/panda3d",
        "https://seclists.org/fulldisclosure/2026/Jan/9"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-457",
          "CWE-789"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22188.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-22188",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519328,
  "published_at": "2026-01-07T20:26:13.36+00:00"
}