{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.0.9"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "ea0418334bff5dc2ea852282517c3e139353f5a7"
            }
          ],
          "repo": "https://github.com/langchain-ai/langgraph",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g48c-2wqr-h844"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28277.json"
  },
  "details": "LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can modify checkpoint data in the backing store (for example, after a database compromise or other privileged write access to the persistence layer), they can potentially supply a crafted payload that triggers unsafe object reconstruction when the checkpoint is loaded. No known patch is public.",
  "id": "CVE-2026-28277",
  "modified": "2026-03-11T13:50:19.470560208Z",
  "published": "2026-03-05T19:10:36.865Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28277.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/langchain-ai/langgraph/security/advisories/GHSA-g48c-2wqr-h844"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28277"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading"
}